A researcher secretly puts a dab of rouge on a child's nose before placing him in front of a mirror. A child who recognizes himself in the mirror will begin to touch his own nose when he sees the red spot. This self- begins at approximately 15 to 18 months of age.

a is the answer because it just is

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.

propioception;

answer; role-taking;