Which of the following statements is correct with reference to a test tube baby ?

Options

A. Fertilisation of the egg is completed outside the body , the fertilised egg is then placed in the womb of the mother where the gestation is completed
B. Fertilisation of the egg is completed in the female genital track. It is then taken out and grown in a large test tube
C. A prematurely born boby is reared in an incubator
D. Fertilisation of the egg and growth of the embryo is completed in a large test tube

Explanation

To determine which statement is correct regarding a test tube baby, let's analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Test Tube Baby Concept**:
- A test tube baby is a result of assisted reproductive technology, specifically in vitro fertilization (IVF). This process involves fertilizing an egg with sperm outside the human body.

2. **Analyzing the Options**:
- **Option A**: "Fertilization of the egg is complete outside the body, the fertilized egg is then placed in the womb of the mother."
- This statement is true. In IVF, the egg is fertilized outside the body, and once fertilization occurs, the resulting zygote is implanted into the mother’s womb for further development.

- **Option B**: "Fertilization of the egg is completed in the female genital tract and it is then taken out and grown in a large test tube."
- This statement is incorrect. In IVF, fertilization occurs outside the body, not in the female genital tract.

- **Option C**: "A prematurely born baby is reared in an incubator."
- This statement is not relevant to the definition of a test tube baby. While premature babies may be placed in incubators for care, this does not pertain to the IVF process.

- **Option D**: "Fertilization of the egg and growth of the embryo is completed in a large test tube."
- This statement is incorrect. While fertilization occurs in a laboratory setting (often referred to as a test tube), the growth of the embryo is completed in the mother’s uterus.

3. **Conclusion**:
- The correct statement regarding a test tube baby is **Option A**: "Fertilization of the egg is complete outside the body, the fertilized egg is then placed in the womb of the mother."