Which one uses knuckles while walking

Options

A. Apes
B. Old world monkeys
C. New world monkeys
D. Prosimians .

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which group of animals uses their knuckles while walking. We need to analyze the provided options to identify the correct answer.

2. **Reviewing the Options**: The options given are:
- Option 1: Apes
- Option 2: Old World Monkeys
- Option 3: New World Monkeys
- Option 4: Prosimians

3. **Analyzing Each Option**:
- **Apes**: Apes are known for their unique mode of locomotion. They walk using the knuckles of their hands and the outer edges of their feet. This characteristic is specifically associated with their method of movement.
- **Old World Monkeys**: While they are also capable of walking on all fours, they do not typically use their knuckles in the same way that apes do.
- **New World Monkeys**: These monkeys are primarily arboreal and tend to leap from branch to branch rather than walking on the ground, so they do not use their knuckles for walking.
- **Prosimians**: Similar to New World monkeys, prosimians are also more adapted to climbing and leaping rather than walking on the ground using knuckles.

4. **Identifying the Correct Answer**: Based on the analysis, the only group that uses knuckles while walking is **Apes**. Therefore, the correct answer is Option 1: Apes.

5. **Conclusion**: Apes are the mammals that use their knuckles while walking, distinguishing them from other primates listed in the options.

---