In this error-identification question on passive structures, choose which statement is grammatically incorrect among A, B, C, and D about "the deceased soldier's family banking upon the government for justice and support."

Introduction / Context:
This question asks you to identify which of the four given statements is grammatically incorrect. All four sentences describe the same idea in different ways: that the family of a deceased soldier is relying on the government for justice and support. The task is to recognise which sentence does not follow standard English grammar and usage, even though it may contain similar words. Such identification questions are common in competitive exams to test your sensitivity to subtle errors in structure and collocation.

Given Data / Assumptions:

• Option A: "The deceased soldier’s family is banking upon the government for justice and support."
• Option B: "The government is being banked upon by the deceased soldier’s family for justice and support."
• Option C: "For justice and support, the deceased soldier’s family is banking upon the government."
• Option D: "The family of the deceased soldier is the banking of the government for justice and support."
• The verb phrase "bank on" or "bank upon" means "to rely on" or "to depend on".
• We assume the intended meaning is that the family is relying on the government.

Concept / Approach:
The phrasal verb "bank on" or "bank upon" is used in active voice where a person "banks on" something. In passive constructions, it can be transformed to "is banked upon by", but we must still retain a clear agent and correct object. Statements A, B, and C correctly convey the idea of reliance using either active or passive forms. Statement D, however, is structurally wrong: "is the banking of the government" is not a standard or meaningful English expression for "is relying on the government". Therefore, D is the incorrect statement.

Step-by-Step Solution:
Step 1: Examine statement A: "The deceased soldier’s family is banking upon the government for justice and support." This uses the active form "is banking upon", which is idiomatic and grammatically correct. Step 2: Examine statement B: "The government is being banked upon by the deceased soldier’s family for justice and support." This is the passive equivalent of A and, although less common, is grammatically acceptable. Step 3: Examine statement C: "For justice and support, the deceased soldier’s family is banking upon the government." This is a simple inversion for emphasis and is grammatically correct. Step 4: Examine statement D: "The family of the deceased soldier is the banking of the government for justice and support." Here, the phrase "is the banking of the government" is incorrect; "banking" cannot be used as a noun in this way to mean "relying", and the preposition "of" is wrong. Step 5: Conclude that statement D is grammatically wrong and does not convey the intended meaning correctly.

Verification / Alternative check:
We can paraphrase the correct sentences to verify their meaning. Options A and C both clearly mean "The family relies on the government for justice and support." Option B, in passive voice, also means "The family relies on the government", just expressed differently. However, if we try to paraphrase D, we get a nonsensical idea: "The family is the banking of the government" does not correspond to any usual structure in English and confuses the roles of subject and object. This confirms that D is the outlier and therefore the incorrect statement.

Why Other Options Are Wrong (as answers):
Option A is an example of correct, natural active voice: "is banking upon" is a continuous action of relying. Option B, though not commonly used in everyday speech, is a grammatically correct passive voice transformation: the government is being relied upon by the family. Option C simply moves the prepositional phrase "For justice and support" to the beginning for emphasis and remains grammatically sound.

Common Pitfalls:
One common mistake is to be suspicious of passive constructions like B and assume they must be wrong, but passive voice is often grammatically correct. Another pitfall is not recognizing when a gerund or present participle ("banking") is being misused as a noun. In sentence D, "the banking of the government" does not express "reliance on the government" and therefore fails both grammatically and semantically. In such questions, always compare each option carefully against known patterns of active and passive structures, and check whether the resulting phrase conveys a clear, sensible meaning.

Final Answer:
The grammatically incorrect statement is D. The family of the deceased soldier is the banking of the government for justice and support.