From the given options, select the pair that carries the same relation as-

Cautious : Casual

Identical : Distinct

The correct answer is OPTION 3 - Identical : Distinct

Cautious : Casual
Cautious means (of a person) careful to avoid potential problems or dangers.
Casual means relaxed and unconcerned.
Identical : Distinct
Identical means similar in every detail; exactly alike.
Distinct means recognizably different in nature from something else of a similar type.
As cautious and casual are opposites similarly identical and distinct are opposites. Hence, Identical : Distinct is the answer.