From the given options, select the one that carried the same relation as:

Subsequent : Prior

Durable : Fragile

The correct answer is OPTION 1 Durable : Fragile

Antonyms of SUBSEQUENT: previous, prior, preceding, former.

Antonyms of FRAGILE: strong, sturdy, tough, rigid, solid, durable.

As subsequent and prior are antonyms so are fragile and durable.

Hence, fragile and durable is the answer.