Concept:The sentence uses the present perfect tense "have not evolved," so the verb following it must also be in past participle form.
Explanation:The error is in part (c) of the sentence.
The phrase "or grow up enough" uses the base form "grow."
Since the auxiliary verb "have" is already present in "have not evolved," the second verb must also be in past participle form: "grown."
Thus, the correct wording is "or grown up enough."
This maintains the parallel structure of the present perfect tense.
Part (a) "We often hear people say" is grammatically correct.
Part (b) "that most human beings have not evolved" is also correct.
Only part (c) contains an error.
Therefore, the response should be option (c).
The corrected sentence reads: "We often hear people say that most human beings have not evolved or grown up enough to stick to the truth or non-violence."
Answer:Option (c)