Final answer:
Seminal plasma in human males is rich in fructose, which provides energy to sperm cells, and it also contains calcium. The correct answer is a) Fructose and calcium.
Step-by-step explanation:
The question pertains to the composition of seminal plasma in human males. Seminal plasma is a component of semen that is rich in various substances that nourish and support sperm. According to the information provided, seminal plasma contains proteins and fructose, which is a simple sugar that provides energy to sperm cells. Additionally, seminal plasma has a basic pH that prolongs the lifespan of sperm after entering the acidic environment of the female vagina. Therefore, the correct answer to the question is: a) Fructose and calcium.