Emaciation of the body, thinning of limbs, skin becoming dry, thin and wrinkled, impairment of growth and development of brain and mental difficulties in infants less than a year in age occurs in_____

Options

A. (a) Kwashiorkar
B. (b) Marasmus
C. (c) Constipation
D. (d) Jaundice

Answer

To solve the question regarding the symptoms described, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Symptoms**: The question describes a condition characterized by emaciation of the body, thinning of limbs, dry and wrinkled skin, impairment of growth and brain development, and mental difficulties in infants less than a year old.

2. **Analyze the Options**: The options provided are:
- A) Quasi-Orca
- B) Merasmus
- C) Constipation
- D) Jaundice

3. **Understanding Each Condition**:
- **Quasi-Orca**: This term does not relate to any known medical condition.
- **Merasmus**: This is a severe form of malnutrition due to a deficiency of proteins and calories, often seen in infants and young children.
- **Constipation**: This refers to difficulty in bowel movements and does not relate to the symptoms described.
- **Jaundice**: This condition is characterized by yellowing of the skin and eyes, not the symptoms mentioned.

4. **Link Symptoms to Merasmus**: Merasmus is known to cause:
- Emaciation of the body
- Thinning of limbs
- Dry and wrinkled skin
- Impaired growth and development of the brain
- Mental difficulties

5. **Confirm Age Group**: Merasmus typically affects infants and children between six months to two years of age, which includes infants less than a year old.

6. **Conclusion**: Given the analysis, the correct answer is **B) Merasmus**.

### Final Statement:
Hence, the correct answer to the question is **option B, Merasmus**.