Which of the following corrects the pronoun error in this passage?

the sixth-grade students liked volunteering their time to read to the elderly people in the hospital. it made them happy.

the sixth-grade students liked volunteering his or her time to read to the elderly people in the hospital. it made them happy.

the sixth-grade students liked volunteering their time to read to the elderly people in the hospital. it made the volunteers happy.

the sixth-grade students liked volunteering their time to read to the elderly people in the hospital. they made them happy.

the sixth-grade students liked volunteering their time to read to the elderly people in the hospital. reading made them happy.

C: The sixth-grade students liked volunteering their time to read to the eldery people in the hospital. It made the volunteers happy.

Explanation:

The sentence It made the volunteers happy.  corrects the pronoun error in the passage because it makes clear who  becomes happy with the action of "volunteering their time to read to the eldery people." In the options A and B, it´s not clear: It made who happy? In D: Who made who happy? In E: Reading made who happy? (the volunteers or the elderly people ?)

abater   ambary   ambery   baryta   baryte   bemata   betray   jarvey   ramate   ramjet

explanation:

those are all the possible words

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