Which of the following best explains the importance of water to humans?
a.
water is essential for sustaining human life.
b.
water is important for shipping and trade.
c.
water is a valuable, profitable commodity.
d.
all of the above

(it is not a)

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a