Choose the incorrect match.

Options

A. First month : formation of heart begins.
B. Second month : development of limbs and digits
C. Third month : most of the major organ systems are formed .
D. Sixth month : first movements of the fetus is sensed

Answer

To solve the question of identifying the incorrect match regarding fetal development in humans, we will analyze each provided match step by step.

### Step-by-Step Solution:

1. **First Month**:
- By the end of the first month, the heart formation occurs in the embryo.
- This match is correct as the heart is one of the first organs to develop.

2. **Second Month**:
- During the second month, the development of limbs and digits occurs.
- This match is also correct as limb development begins in this stage.

3. **Third Month**:
- By the end of the third month (or after the 12th week), major organ systems are formed, and external genital organs develop.
- This match is correct as significant organ development occurs during this time.

4. **Sixth Month**:
- It is stated that the first movement of the fetus is sensed during the sixth month.
- This match is incorrect because the first fetal movements (quickening) are typically sensed around the fifth month, not the sixth.

### Conclusion:
The incorrect match is the one stating that the first movement of the fetus is sensed in the sixth month. The correct answer is that this occurs in the fifth month.

### Final Answer:
The incorrect match is the fourth option regarding the first movement of the fetus being sensed in the sixth month.

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