​Which of the following continues to grow and develop organs to become a foetus?​

Correct option is A

The correct answer is (A) Embryo.

• An embryo continues to grow and develop organs to become a fetus.
•  The fetal stage begins around the 10th week of pregnancy, which is about 8 weeks after fertilization. 

Stages of fetal development :

• Germinal stage: This stage begins at fertilization and lasts until about the fourth week. It includes implantation.
• Embryonic stage: This stage lasts from about the fourth week to the tenth week. During this stage, important organs and body structures form. 
• Fetal stage: This stage begins around the 10th week and lasts until birth. During this stage, the organs and systems that have already formed continue to develop. 

Development of a fetus:

• Facial features: The fetus develops distinct facial features, including eyes, nose, and mouth. 
• Limbs: The fetus develops long and thin limbs, including fingers and toes. 
• Bones: Soft cartilage begins to be replaced by bones. 
• Muscles: Early muscle development commences. 
• Nervous system: The neural tube develops into the brain and spinal cord. 
• Lungs: The lungs of the fetus become more mature. 
• Genitals: Genitals appear, although sex organs are not yet differentiated.