Question

Why is Darry so strict with Ponyboy?

Answer 1

He wants Ponyboy to be successful

Answer 2

In the Outsiders Darry is very strict with his brother.
It is not A,  Because he does like Ponyboy.  It shows when he was in the hospital because of the wood falling on Ponyboy in the church.
It is not B.  He does like being charge.
I'd say it is C.  He wishes only the best from his brother.
It is not D.  Darry is not a Soc himself.

it is c