Select the option that is related to the fifth word in the same way as the second word is related to the first word and the fourth word is related to the third word.

Water : Thirst :: Food : Hunger :: Rest : ?

Exhaustion

Pattern followed is :

Water : Thirst

Thirst is quenched by water,

 Food : Hunger

Hunger is quenched by food.

Similarly ,

Rest : ?

Exhaustion is quenched by Rest .

Ans = Exhaustion