The following sentence has been divided into parts. One of them may contain an error.
Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.
Everyone was surprised at his indefatigable courage and determination to achieve what he desired.

Correct option is C

Option (c) No error is correct.
Explanation:
· The sentence is grammatically correct and properly structured.
· 'Everyone was surprised' (subject + verb) correctly leads into the prepositional phrase 'at his indefatigable courage and determination'.
· 'To achieve what he desired' is correctly phrased to show purpose.
Grammatical rule used:
· Proper sentence construction using prepositions and infinitives.
· Indefatigable is used correctly as an adjective qualifying 'courage and determination'.
Example: Everyone was impressed at her indefatigable efforts to finish the project on time.
�� Info Booster:
When two qualities ('courage' and 'determination') are linked with 'and', they are treated as a single subject, so singular verb usage is correct.