English Grammar — Error Spotting (Prepositions / Introductory Phrases) Identify the part that contains a grammatical error. If there is no error, choose 'No error'. Full sentence: On his attitude it seems that what he wants is that the decision-making power should rest with him.

Introduction / Context:
The question examines appropriate prepositional choices and idiomatic introductory phrases used to express inference. English prefers "From his attitude," "Judging by his attitude," or "Going by his attitude" rather than "On his attitude."

Given Data / Assumptions:

• Sentence under review: "On his attitude it seems that what he wants is that the decision-making power should rest with him."
• Task: Identify the erroneous fragment among A–D.
• Register: Standard written English.

Concept / Approach:

When drawing conclusions based on evidence, English uses prepositions like "from" or participial openers like "judging by." The preposition "on" here is unidiomatic and incorrect.

Step-by-Step Solution:

1) Examine the opener "On his attitude".2) Replace with idiomatic alternatives: "From his attitude," "Judging by his attitude," or "Going by his attitude".3) Confirm remaining clause is coherent and grammatical.4) Conclude part A is the error.

Verification / Alternative check:

Recast: "From his attitude, it seems that he wants the decision-making power to rest with him." This is idiomatic and clear.

Why Other Options Are Wrong:

B: Correctly introduces the matrix clause of appearance ("it seems that ...").C: Noun phrase "the decision-making power" is fine.D: Modal "should rest" is acceptable and natural in formal English.E: Not applicable because A is erroneous.

Common Pitfalls:

Translating directly from other languages can lead to incorrect prepositions ("on" vs "from"). Always check idiomatic English usage for inferential openers.

Final Answer:

On his attitude