"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."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.