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Question:

Determine whether the underlined portion of the sentence below is correct or whether it needs to be revised.
Plenty of high school students spend their time involved in the community by working with peers, young children and also helping senior citizens.

A spend their time involved in the community by working with peers, young children and senior citizens.
Explaination

By breaking the parallelism (continuity of a pattern, in this case), the underlined portion of this sentence must be changed. By simply changing “also helping senior citizens” to “senior citizens” the list is clearly discussing people in the community from various age groups.