If you can eliminate all of the negative consequences of a problem, it is termed an
a. inefficient solution
b. efficient solution
c. elegant solution
d. inelegant solution

The correct answer is B.

An efficient solution solves the problem and does it in a quick, direct way without wasting any time. Efficiency is required to increase productivity in the labor market and to obtain better results.

This is to contrast effective solution which simply solves the problem without eliminating all the negative consequences. A solution may be obtained but  some aspects of the problem still exist and a final solution is still looked for.

Efficiency is the state or quality of being efficient, or able to accomplish something with the least waste of time and effort; competency in performance.

your answer is rising unemployment and inflation.

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.