Researchers have shown that older ants, which usually spend more time gathering nourishment for the colony, tend to have larger brains than do younger ants, which usually nurture ant larvae in the colony. since gathering nourishment requires greater cognitive skills than does nurturing larvae, it would appear that such gathering leads to the increased brain size of older ants. which of the following, if true, most seriously weakens the argument above? a. ants that have spent more time gathering nourishment do not have considerably larger brains than do ants that have spent a much shorter time gathering. b. the brains of older ants that stop gathering nourishment to take on other tasks do not become smaller. c. the brains of older ants that are not involved in gathering nourishment are the same size as those counterparts of the same age that do gather nourishment. d. in many species of ants, the brains of older ants are only minimally larger than the brains of younger ants. e. ants that have to travel farther to gather nourishment do not have considerably larger brains than do ants that do not have to travel far.

The correct answer is C) The brains of older ants that are not involved in gathering nourishment are the same size as those counterparts of the same age that do gather nourishment.

The statement that most seriously weakens the argument above is "The brains of older ants that are not involved in gathering nourishment are the same size as those counterparts of the same age that do gather nourishment."

Researchers have shown that older ants, which usually spend more time gathering nourishment for the colony, tend to have larger brains than do younger ants, which usually help nurture ant larvae in the colony. Since gathering nourishment requires greater cognitive skills than does nurture larvae, it would appear that such gathering leads to the increased brain size of older ants. But the brains of older ants that do not collect food have the same size of the brain. So there is not a direct correlation between the age of the ants and the brain size, regarding the activity they do.

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.