Yes I do think it’s very important to give our child an understanding of different cultures and languages around the world. It could also give them more experiences when they grow up
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.
Karen was disdaining her thoughts on the political debate.
(Now that I have answered your question can you help me with my current one. Its the most recent one on my profile page thing.)