A forensic scientist is often called upon to testify about... A. a suspect's moral character
B. physical evidence related to a crime
C. the reliability of witness testimony
D. the past history of the suspect

B

Explanation:

Forensic scientists are the ones who are gathering the details of the scene a building evidence for the case.

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.