Ben believes that most of the automobiles in his neighborhood are suvs. he does a house-to-house survey of parked cars. he surveys 45 cars and only 8 of the cars he finds are suvs. yet fully 50% of the town's automobiles are suvs. what is the most likely explanation for these two facts? a. ben's sample was not representative of the entire town. b. suvs are sometimes hard to distinguish from non-suvs and ben made errors. c. most of the suvs were on the road, and less popular models were left at home. d. ben only looked at parked cars instead of asking residents what kind of car they drive.

answer; i believe the correct answer is (crops);

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.