In this type of questions, a pair of words is given, followed by four pairs of words as alternatives. It is  required to choose the pair in which the words bear the same relationship to each other as the words of the given pair bear

1)

Candle : Wick


A) Bicycle : Wheel

B) Oven : Fire

C) Hammer : Nail

D) Light : Bulb

Answer:

Option A

Explanation:

Second is the most essential working part of the first.

Hence the answer is (a).