Which best describes the process of insertion?

occurs when part of a chromosome breaks off and is placed into the middle of another chromosome occurs when part of a chromosome breaks off and reattaches backward on the same chromosome occurs when part of a chromosome breaks off and does not reattach occurs when part of a chromosome breaks off and attaches to another chromosome

Explanation:

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )