"For instance" indicates that an example is about to come. My older brother is the funniest person I know. For instance,

A
he’s often crying and unhappy.

B
he recently became afraid of his own shadow.

C
he can make our mother laugh just by rolling his eyes.

D
I often feel myself longing for sleep when he speaks.

c,
explaination : your brother is the funniest you know because he can make your mother laugh just by rolling her eyes

Not b or c so that leaves you with a or d. a is the better choice.

There is nothing inherently wrong with being gay. speaking generally, opposition to gays are usually judged on people's moral basis whether it be religion, experience or other factors. to conclude, there is no objective answer to this question only subjective ones that rely on people's idea of what is right and wrong.