A single cell becomes many cells. Each cell has a different function. Many cells combine to form one cell. All the cells have the same function.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which statement best describes the development of a human embryo?
Possibilities:
- A single cell becomes many cells.
- Each cell has a different function.
- Many cells combine to form one cell.
- All the cells have the same function.

A single cell becomes many cells.