English Grammar — Error Spotting (Spelling) Identify the part that contains a spelling error. If there is no error, choose 'All correct'. Full sentence: His decision was based on adequate and acurate information.

Introduction / Context:
Accurate spelling is a core element of edited English. Some words with double consonants or alternating vowels are commonly misspelled because pronunciation reduces certain syllables. “Accurate” often loses a “c” in error.

Given Data / Assumptions:

• Sentence: “His decision was based on adequate and acurate information.”
• Goal: select the single fragment that is incorrect.

Concept / Approach:

The correct spelling is “accurate” with a double “c” (ac + cu + rate). All other fragments are fine: the prepositional phrase in A, the coordinating conjunction in B, and the head noun “information” in D.

Step-by-Step Solution:

1) Identify the suspect word in C.2) Compare with the dictionary form: accurate.3) Confirm A, B, and D present no grammatical or lexical issues.4) Mark C as the error.

Verification / Alternative check:

Substitute: “adequate and accurate information” is the fixed collocation in policy/technical writing.

Why Other Options Are Wrong:

A, B, D: Standard forms; no error.

Common Pitfalls:

Dropping consonants in trisyllabic words (e.g., “acurate,” “seperate”). Learn the correct patterns: accurate, separate.

Final Answer:

acurate