Question

Ava is five weeks pregnant, and her fetus is beginning to develop three layers that will form the essential human functions. What will the ectoderm layer become over the course of Ava's pregnancy?
1. heart, circulatory system, bones, muscles, and reproductive system

2. skin, nervous systems, connective tissue, and eyes

3. lungs, intestines, and bladder

4. hair, fingernails, and eyebrows

Answer 1

I'm no expert at all so don't take my word but number one looks like it will make the most sense. Because it has the word reproductive system and yeah...

Answer 2

1. heart, circulatory system, bones, muscles, and reproductive system