Which of these planets of our solar system completes one rotation about its axis in about 10 earth hours?

Options

A. Mars
B. Jupiter
C. Uranus
D. Neptune

Answer

To determine which planet in our solar system completes one rotation about its axis in about 10 Earth hours, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a planet that completes a rotation about its axis in approximately 10 Earth hours. This means we are looking for the rotational period of the planets.

2. **Know the Planets**: Familiarize yourself with the planets in our solar system. The major planets include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

3. **Research Rotational Periods**: Look up the rotational periods of these planets. Here are some key facts:
- **Mercury**: Approximately 59 Earth days
- **Venus**: Approximately 243 Earth days
- **Earth**: 24 hours
- **Mars**: Approximately 24.6 hours
- **Jupiter**: Approximately 10 hours
- **Saturn**: Approximately 10.7 hours
- **Uranus**: Approximately 17 hours
- **Neptune**: Approximately 16 hours

4. **Identify the Correct Planet**: From the data, we see that Jupiter completes its rotation in about 10 hours, which matches the requirement of the question.

5. **Conclusion**: Therefore, the planet that completes one rotation about its axis in about 10 Earth hours is **Jupiter**.

### Final Answer:
**Jupiter**

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