Read the rough-draft paragraph.

more than likely, fellow volunteers will have many common interests and ideals. after all, volunteers usually seek opportunities to use their time and talents for issues they care about, and this is often a good starting point for many friendships. as co-volunteers, hours will be spent together learning from one another and inspiring each other while working to achieve a common goal. teaming up with others to solve community problems and making changes for the better, not surprisingly, often leads to long-lasting bonds.

which topic sentence should be added to this body paragraph?
a. local community programs provide opportunities for volunteers to share their expertise
b. volunteering for local community programs enables people to establish new friendships
c. acquaintance made while volunteering for a project are rarely continued beyond the project's conclusion,
d. every community has programs that will gladly accept the services of enthusiastic volunteers.