How his house changed while he was gone, how some people were not as loyal as he thought they were
The correct option is "Volunteering is a good way to make friends, help the community, and feel good."
Parallelism is achieved when the same grammar pattern is used when listing ideas. In this example, the parallel structures are "make friends, help the community and feel good" since they all use the same grammar structure: verb+object.
In the rest of the options, there is a break in the pattern so no parallelism is achived.
Answer: The rollercoaster was not fun, nor exciting like they had said.
Explanation:
I hope it is right.