Which of these are types of muscles

When deciding to become a parent: a. the only thing that matters is the desire to have a child. b. the most important thing is whether or not you are financially ready. c. you should be ready to support and nurture a child. d. you have no choice; "nature" decides if and when you will have a child.

How could you find out if that advice is based in scientific evidence?

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4