Which sentence is written correctly? a. the director told him don't never stop acting. b. the director told him never to stop acting. c. the director told him don't not ever stop acting. d. the director told him not to never stop acting.

I'll show you how the sentences look like without conjunctions..

A. The director told him do not never stop acting.
B. The director told him never to stop acting.
C. The directing told him do not not ever stop acting.
D. The director told him not to never stop acting.

All are wrong except B. The director told him never to stop acting.

So B is your answer =)

Perpendicular line? no.