The correct answer is option 4 - 24 spokes.

Ashoka`s Dharma Chakra in the Flag of India has 24 spokes. The Dharma Chakra represents the wheel of law, which is associated with the teachings of Lord Buddha. Each spoke on the wheel represents a noble path that helps in achieving enlightenment and liberation from suffering. The Dharma Chakra is an important symbol in Indian culture, symbolizing unity, progress, and the constant movement of time. It is also a representation of the cycle of birth, death, and rebirth. The 24 spokes on the Dharma Chakra also have significance in the context of the 24 hours in a day, symbolizing the continuous progress and movement of the nation.