Even the most perfect person (A) / in the world is said to have erred ...
Error in Subject-Verb Agreement
The given sentence is grammatically incorrect because there is a subject-verb agreement error. The subject of the sentence is 'person', which is singular, and the verb used is 'have', which is plural. Therefore, the correct verb form should be 'has' instead of 'have'.
Corrected Sentence:
Even the most perfect person in the world is said to have erred when there was time to perform.
Explanation:
The corrected sentence has no grammatical errors. It conveys the intended meaning that even the most perfect person in the world can make mistakes when there is an opportunity to perform. The sentence uses the correct subject-verb agreement, which is essential for making the sentence grammatically correct.
Even the most perfect person (A) / in the world is said to have erred ...
'Perfect' isn't an adjective which can have degrees. A person can't be more or most perfect. Either they are perfect or not perfect. These are the only 2 options. Therefore, option A should be the correct answer.