The graph shows the changing levels of hormones during menstruation and ovulation. which hormone has the most influence on a safe pregnancy?

a. luteinizing hormone promotes fertility because it spikes the most during ovulation. b.estradiol promotes fertility because it peaks slightly before ovulation. c.progesterone promotes fertility because its levels rise during ovulation and immediately after. d.follicle-stimulating hormone promotes fertility because it is released mostly during ovulation.

Ans. (C).Progesterone promotes fertility because its levels rise during ovulation and immediately after.

Progesterone is a female sex-hormone, produced in the ovaries right after ovulation and its level rise immediately after ovulation (as shown in graph). A thick, and proper uterine lining is important for the implantation of zygote in the uterine wall.

Progesterone has the most influence on a secure pregnancy as it promotes the thickening and maintenance of uterine lining. Low levels of progesterone makes it difficult to get pregnant as zygote cannot implant properly.

Thus, the correct answer is option (C).

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.