Maybe you have to check yourself and see where the need of improvement is needed.
The sentence that contains a present perfect verb is: She has assisted voters in District 2 for many years.
The present perfect tense is formed by combining the verb to have/has and the past participle of the main verb in the sentence.
In the third option given, the combination of "has" and "assisted" helps in forming the present perfect tense of the sentence. Thus, option C is correct.
Learn more about the present perfect tense here:
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The second sentence's style is appropriate for a job application.
<span>It's that they symbolize selfless giving </span>
