Answer the following question given this paragraph: 

The cells of the blastocyst form an inner cell mass and an outer cell layer, as shown in Figure below . The inner cell mass is called the embryoblast . These cells will soon develop into an embryo. The outer cell layer is called the trophoblast . These cells will develop into other structures needed to support and nourish the embryo.


Q: What is the inner cell mass formed by the cells of the blastocyst called?

 Choices:

- xerophyte

- amniotic cavity

- ectoderm

- embryoblast

A:
embryoblast
