Ancestor of man who first stood erect was :

Options

A. Java man
B. Australopithecus
C. Peking man
D. Cro-Magnon man

Answer

To determine the ancestor of man who first stood erect, we need to analyze the options given: Java man, Australopithecus, Peking man, and Cro-Magnon man.

### Step-by-Step Solution:

1. **Understanding Bipedalism**: The question refers to the ancestor that first stood erect, indicating the ability for bipedal locomotion (walking on two legs). This adaptation is crucial in human evolution.

2. **Identifying Key Ancestors**:
- **Australopithecus**: This genus is known for its early bipedalism. Fossils indicate that Australopithecus species walked upright.
- **Homo habilis**: Considered one of the first members of the genus Homo, but it is not primarily known for being the first to stand erect.
- **Homo erectus (Java man)**: This species is known for its advanced tool use and further development of bipedalism but is not the first to stand erect.
- **Peking man**: This is a later species of Homo erectus, also not the first to stand erect.
- **Cro-Magnon man**: This refers to early modern humans and is much later in the evolutionary timeline.

3. **Conclusion**: Based on the evidence, **Australopithecus** is recognized as the first ancestor of man that exhibited bipedal locomotion, thus standing erect.

### Final Answer: Australopithecus

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