When we travelling in a bus, we tend to move forward when the bus is stopped suddenly. This is because of __________.

Correct option is C

The correct answer is (C) the inertia of our body.

Explanation:

• Inertia is the property of an object to resist changes in its state of motion.
• When the bus stops suddenly, the lower part of your body (in contact with the seat) comes to rest with the bus, but the upper part of your body tends to remain in motion due to inertia.
• This causes you to lurch forward.

Clarifications for Other Options:

• Newton's third law of motion: Incorrect, as it deals with action and reaction forces.
• Acceleration due to gravity: Incorrect, as it relates to the force acting due to gravity, not motion in a bus.
• Newton's second law of motion: Incorrect, as it explains the relationship between force, mass, and acceleration but does not directly address inertia.