Analogy - Verbal and Reasoning

Directions to SolveIn each word of the following questions consists of pair of words bearing a relationship among these, from amongst the alternatives, pick up the pair that best illustrate a similar relationship.
Q1:

Train : Track

A Water : Boat

B Bullet : Barrel

C Idea : Brain

D Fame : Television

ANS:B - Bullet : Barrel

Explanation: As Train is guided by the track similarly Bullet is guided by the barrel.