Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

By the end of which week of pregnancy is the body of the fetus covered with fine hair,eyelids separate,and eyelashes are formed (in $weeks$)?

Placenta acts as an endocrine tissue and produces several hormones like:
$A.$ Human chorionic gonadotropin $(hCG)$
$B.$ Human placental lactogen $(hPL)$
$C.$ Estrogens
$D.$ Progesterone

Most of the major organ systems in the foetus are formed $:-$

The amnion of the mammalian embryo is derived from:

Which structure is responsible for the production of the hormone progesterone?