In human beings, which part shows the maximum increase in weight from birth to adulthood?
(a) Brain
(b) Fat
(c) Muscles
(d) Skeleton

Options

A. Brain
B. Fat
C. Muscles
D. Skeleton

Answer

To determine which part of the human body shows the maximum increase in weight from birth to adulthood, we can analyze each option provided:

1. **Understanding Growth in Human Beings**:
- Human growth involves an increase in body weight as individuals transition from birth to adulthood. This growth is primarily due to two processes: cell division and the increase in the size of existing cells.

2. **Analyzing Each Option**:
- **(a) Brain**: The brain undergoes significant growth during early childhood, reaching about 80% of its adult size by age 2 and continuing to mature until the mid-20s. This indicates a substantial increase in weight.
- **(b) Fat**: While fat accumulation increases during childhood and adolescence, the total weight gained from fat does not surpass that of the brain in terms of percentage increase from birth.
- **(c) Muscles**: Muscle mass increases significantly during childhood and adolescence, especially during puberty, but it does not show as much weight increase as the brain.
- **(d) Skeleton**: The skeleton grows and matures, but the increase in weight is not as pronounced as that of the brain.

3. **Conclusion**:
- Among the options, the brain shows the most significant increase in weight from birth to adulthood. Therefore, the correct answer is **(a) Brain**.