If no external force acts on a body, it will

Options

A. move with more speed
B. change its shape
C. break into pieces
D. either remain in its state of rest or uniform motion.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks what happens to a body if no external force acts on it. This relates to the principles of motion described by Newton's laws.

2. **Newton's First Law of Motion**: According to Newton's first law, an object will remain at rest or continue to move in a straight line at a constant speed unless acted upon by an external force. This means that if no external force is applied, the state of the object will not change.

3. **Analyzing the Options**: The options provided in the question likely include various states of motion or rest. We need to identify which option aligns with Newton's first law.

4. **Identifying the Correct Answer**: Since Newton's first law states that an object will remain in its state of rest or uniform motion unless acted upon by an external force, the correct answer would be that the body will either remain at rest or continue moving with uniform speed.

5. **Conclusion**: Therefore, if no external force acts on a body, it will either remain in its state of rest or continue in uniform motion.

**Final Answer**: If no external force acts on a body, it will either remain in its state of rest or uniform motion.

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