What is semen?

A: A combination of sperm cells and egg cells
B: A mixture of sperm cells and other fluids
C: A mixture of testosterone and other hormones
D: A combination of the hormones LH and FSH

B: A mixture of sperm cells and other fluids

Semen is a fluid that is produced by the male reproductive system and contains sperm cells as well as other fluids from the prostate gland and seminal vesicles.