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.

A.The sixth-grade students liked volunteering his or her time to read to the elderly people in the hospital. It made them happy.
b. The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. It made the volunteers happy.
c. The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. They made them happy.
d.The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. Reading made them happy.

Respuesta :

pmayl
The best choice is B) it made the volunteers happy. 
The first sentence is correct, so A is wrong. 

The error in the second sentence is that we don't know who "them" refers to. It (reading to the elderly) made "them" happy, but who is them? The volunteers or the elderly people?  
B) clarifies this point by saying that it made the volunteers happy. 

Answer:

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

Explanation:

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