How do lower prices tend to affect demand?
a. they tend to increase the availability of a product.
b. they tend to decrease the availability of a product.
c. they tend to increase the interest in a product.
d. they tend to decrease the interest in a product.

C. They tend to increase the interest in a product.

Demand refers to how much of a product the public wants. When we say that demand is high, we mean that the good is desired and sold in large quantities. When a product has a low price, consumers tend to be more interested in it and to buy more of it, which means that the demand rises.

c. taught scientists many new things about the earth, but not other planets.

explanation:

d.) continue to rise rapidly