A vector quantity is a quantity that has both magnitude (size or quantity) and direction.

Option 1: Momentum is the correct answer. Momentum is a vector quantity as it is both magnitude, i.e., the mass and speed of an object, and direction, i.e., the direction in which the object is moving.

Option 2: Pressure is incorrect. Pressure is a scalar quantity. It has magnitude (force per unit area) but no specific direction. For example, when you inflate a balloon, the pressure exerted by the air inside the balloon acts equally in all directions.

Option 3: Energy is incorrect. Energy is a scalar quantity. It has magnitude, such as the amount of work done or heat transferred, but it does not have a specific direction.

Option 4: Work is incorrect. Work, like energy, is a scalar quantity. Work has magnitude, defined as force applied over a distance, but it does not have a specific direction.

Hence, momentum is the only vector quantity among the options given.