Answer:
The correct answer would be option C. joining a gay-straight alliance.
Explanation:
A gay-straight alliance is alliance or organization that is community-based on community formed in all universities and colleges led by students that intend to provide safety and security to all LGBT (lesbian, gay, bisexuals).
These alliance helps in students to respect and building the tolerance to the differences among individuals that help in providing support the individual that is different.
Thus, the correct answer is option C.