The correct answer is option D: Fruit falling off the tree

Explanation:
Angular momentum is a physical quantity that is conserved when no external torques act on a system. It is the rotational analogue of linear momentum. The conservation of angular momentum applies to objects or systems that are rotating or in rotational motion.

Conservation of Angular Momentum:
The conservation of angular momentum states that the total angular momentum of a system remains constant unless acted upon by an external torque. This means that the initial angular momentum of a system will be equal to the final angular momentum of the system, as long as no external torques are present.

Application of Conservation of Angular Momentum:
The application of the conservation of angular momentum can be observed in various scenarios, including:

1. Cat landing gently on feet: When a cat falls from a height, it can rotate its body to land on its feet. This is possible due to the conservation of angular momentum. As the cat rotates its body, it changes its moment of inertia, which allows it to change its angular velocity and adjust its position in mid-air.

2. A skater performing a fast spin: A skater performing a fast spin can increase or decrease their rotational speed by changing their body position. By bringing their arms closer to their body, they reduce their moment of inertia, causing an increase in their angular velocity. This demonstrates the conservation of angular momentum.

3. A diver performing somersaults while diving: A diver can perform somersaults while diving by changing their body position and moment of inertia. By tucking their body into a compact shape, they reduce their moment of inertia, allowing them to rotate faster. This change in angular velocity is a result of the conservation of angular momentum.

Why option D is the correct answer:
Option D, "Fruit falling off the tree," does not involve any rotational motion or change in angular momentum. When a fruit falls off a tree, it falls straight down due to the force of gravity acting on it. The motion of the fruit can be described using linear motion principles, such as Newton's laws of motion, rather than conservation of angular momentum.

Therefore, option D does not involve the application of the conservation of angular momentum.