Which of the following is generally considered to be a minor body in the solar system ?

Answerfur trade;

Summer months are the wettest.

The answer is d. none  hope this .

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.