The marginal benefit curve is:
a. upsloping because of increasing marginal opportunity costs.
b. upsloping because successive units of a specific product yield less and less extra benefit.
c. downsloping because of increasing marginal opportunity costs.
d. downsloping because successive units of a specific product yield less and less extra benefit.

D. downsloping because successive units of a specific product yield less and less extra benefit.

Explanation:

This has to do with diminishing marginal productivity which causes that marginal costs to increase.

In true, close to 0 production, marginal costs decrease and marginal benefit curve increases. But because of diminishing marginal productivity, it (marginal costs curve) soons reaches a min and start increasing, which causes the marginal benefit curve to decrease

the correct answer option is b. a single paragraph.

explanation:

when you are thinking about paragraph​ topics, you should always choose a subject that can be adequately addressed in a single paragraph.

a paragraph is a piece of writing consisting of a few sentences that deal with a single theme. it has only a single idea that the paragraph revolves around and talks about.

so a paragraph topic must be chosen wisely where a single idea can be communicated in a single paragraph.