Which among the following is correct about a test tube baby?

Fertilisation outside and gestation inside mother’s womb.

The correct description about a test tube baby is:

Fertilization outside and gestation inside mother’s womb.

In the process of In Vitro Fertilization (IVF), commonly referred to as a test tube baby procedure, fertilization occurs outside the female body, typically in a laboratory setting. The egg and sperm are combined in a laboratory dish (in vitro), and once fertilization occurs, the resulting embryo is transferred into the mother's uterus or womb for gestation and further development. The embryo implants in the mother's uterus, where it grows and develops throughout the pregnancy.