Action and reaction act on the :

Options

A. same body in opposite directions
B. different bodies in opposite directions
C. different bodies, but in same direction
D. same body in same direction.

Explanation

To solve the question "Action and reaction act on the:", we need to understand Newton's Third Law of Motion. Let's break down the solution step by step.

### Step-by-Step Solution:

1. **Understanding Newton's Third Law**:
- Newton's Third Law states that for every action, there is an equal and opposite reaction. This means that forces always come in pairs.

2. **Identifying the Bodies**:
- Consider two bodies, let's call them Body A and Body B. When Body A exerts a force on Body B, Body B will exert an equal force back on Body A.

3. **Direction of Forces**:
- If Body A exerts a force in the rightward direction on Body B, then Body B exerts a force in the leftward direction on Body A. These forces are equal in magnitude but opposite in direction.

4. **Action and Reaction Forces**:
- The action force is the force exerted by Body A on Body B, and the reaction force is the force exerted by Body B on Body A. According to Newton's Third Law, these forces act on different bodies.

5. **Conclusion**:
- Therefore, action and reaction forces act on different bodies, not on the same body. This eliminates options that suggest they act on the same body or in the same direction.

6. **Final Answer**:
- The correct answer is that action and reaction forces act on different bodies.