Correct Answer & Explanation
Option D
The word 'enjoin' means to instruct or urge (someone) to do something; prescribe (an action or attitude) to be performed or adopted. 'Command' is a strong synonym, implying authoritative instruction. 'Permit' is an antonym, while 'forbid' is an antonym for the 'prescribe' sense, and 'request' is a weaker form of urging.