Amniocentesis was illegally utilised for ....... .

Options

A. detection of chromosomal abnormalities
B. detection of metabolic disorders
C. detection of foetal sex
D. Both (a) and ( c)

Explanation

### Step-by-Step Solution:

1. **Understanding Amniocentesis**:
- Amniocentesis is a medical procedure used to obtain amniotic fluid, which surrounds the fetus during pregnancy. This fluid contains fetal cells and various substances that can provide valuable information about the developing fetus.

2. **Purpose of Amniocentesis**:
- The primary purposes of amniocentesis include:
- Detection of chromosomal abnormalities (e.g., Down syndrome).
- Detection of metabolic disorders (e.g., cystic fibrosis).
- Determining the sex of the fetus.

3. **Illegal Utilization**:
- While amniocentesis can be used for legitimate medical reasons, it has been illegally utilized in some cases to determine the sex of the fetus. This is often done in cultures where there is a preference for male children, leading to practices such as female infanticide.

4. **Analyzing the Options**:
- Option A: Detection of chromosomal abnormalities - This is a legitimate use of amniocentesis.
- Option B: Detection of metabolic disorders - This is also a legitimate use.
- Option C: Detection of fetal sex - This is the option that refers to the illegal use of amniocentesis.
- Option D: Both B and C - While B is legitimate, C is illegal.

5. **Conclusion**:
- The correct answer to the question is that amniocentesis was illegally utilized for the detection of fetal sex.

### Final Answer:
C. Detection of fetal sex.