Refer to the Following Paragraph

question 8

Multiple Choice

Refer to the following paragraph.
In the evening, males of a species of bee (Idiomelissodes duplocincta) form sleeping clusters in which dozens or hundreds of bees perch close together overnight. An assassin bug kills bees at these sleeping sites, but usually only one or two bees per night.
(A) The bees do not join forces to fight the bug when one appears, so it may be that a bee joins the cluster to lessen the risk that it will be one of the unlucky ones killed at random.
(B) The same sort of clustering of defenseless prey occurs in spadefoot frog tadpoles; hundreds of tadpoles swim and feed together in pools containing carnivorous water beetles that attack and kill them.
(C) In contrast, males of other bees in the genus Idiomelissodes are larger and more capable of deterring a predator on their own, and they sleep apart.
Males of other bees in the genus Idiomelissodes most likely do not also form sleeping clusters because

• A) there is a cost to forming such large groups, such as being easier to target by predators.
• B) they are more highly evolved and no longer need social defense strategies.
• C) males of Idiomelissodes duplocincta do not admit males of other species into their groups.
• D) there is minimal benefit derived from residing in such large groups; the males of Idiomelissodes duplocincta are simply making the best of a bad job.

Calculate economic profit, incorporating opportunity costs and explicit costs.

Understand the concept of economic profits, including implicit and explicit costs.

Analyze the impact of investments on the reduction of production costs and its effect on economic profits.

Distinguish between accounting and economic profits.