He found it hard to withstand the stress of circumstances.

Answer: Option D

Withstand : remain undamaged or unaffected by; resist.
Endure : suffer (something painful or difficult) patiently.
Resist : withstand the action or effect of.
Tolerate : allow the existence, occurrence, or practice of (something that one dislikes or disagrees with) without interference.
Yield : give way to arguments, demands, or pressure.

Antonym of Withstand is Yield