One who forcibly seizes control of a bus

Pirate
Swindler
Hijacker
Pilferer

The correct answer is C. Hijacker.

A pirate is a person who robs ships at sea. A swindler is a person who deceives others in order to gain money or property. A pilferer is a person who steals small amounts of goods, especially from a place where they are employed.

A hijacker is a person who seizes control of an aircraft, ship, or other vehicle by force or threat of force.