The economies in both south africa and kenya are considered to be fairly weak. many economists believe that the weak economy in south africa is caused partly by inefficient state-owned industries. in kenya, the weak economy is caused mainly by a. a lack of tax revenue. b. dishonest government officials. c. a lack of natural resources. d. massive inflation rates.

That's  it's because of                 dishonest government officials.

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

using the scientific method.