Choose the correct statement :

Options

A. All bodies repel each other in this uni - verse.
B. Our earth does not behave like a magnet.
C. Acceleration due to gravity is `8.9m//s^(2)`.
D. All bodies fall at the same rate in vacuum.

Answer

To solve the question of choosing the correct statement from the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Option 1: All bodies repel each other in the universe.**
- This statement is incorrect. According to the universal law of gravitation, all bodies attract each other due to gravitational force. For example, the Earth attracts the Moon, and any object on Earth is attracted towards it. There is no repulsion between bodies in the universe; they exert attractive forces on each other.

2. **Option 2: Our Earth does not behave like a magnet.**
- This statement is also incorrect. The Earth behaves like a giant magnet because it has a magnetic field. This is evident from the way a magnetic compass needle aligns itself with the Earth's magnetic field. The Earth attracts objects towards itself, similar to how a magnet attracts metal objects.

3. **Option 3: Acceleration due to gravity is 8.9 m/s².**
- This statement is incorrect. The standard value of acceleration due to gravity (g) at the surface of the Earth is approximately 9.8 m/s². The value of 8.9 m/s² is not accurate for Earth.

4. **Option 4: All bodies fall at the same rate in vacuum.**
- This statement is correct. In a vacuum, where there is no air resistance, all bodies fall at the same rate regardless of their mass. This is due to the fact that the acceleration due to gravity (g) is constant in a vacuum, and there are no opposing forces acting on the falling bodies.

### Conclusion:
The correct statement is **Option 4: All bodies fall at the same rate in vacuum.**

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