Question

in which of the following ways is the general development of a fetus different during the first and third trimesters?

Answer 1

Body parts are created during the first trimester and they grow to functional size during the third.
Internal organs develop during the first trimester and muscles and skin develop during the third.
Skin, muscles, and skeleton form during the first trimester and internal organs develop during the third.
The blastocyst creates a large ball of cells during the first trimester and it forms into body parts during the third.

Answer 2

Body parts are created during the first trimester and they grow to functional size during the third.

basically first trimester is when the fetal start to develop. At second trimester, you can see fetus has a human shape, third trimester is when the fetal rapidly grow in size.