Observations of organisms include?
a descriptions of why the organism has certain traits.
b descriptions of the number, size, and arrangement of parts of the organism.
c conclusions made about the characteristics of an organism.
d conclusions made based on an organism's dna.

B. descriptions of the number, size, and arrangement of parts of the organism

check for the pregnancy rating of drug. if its class c or d see if other alternatives

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.