Which of these theories states that we are motivated by several needs, but the strongest source is the lowest unsatisfied need?

The answer the needs hierarchy theory or hierarchy of needs theory. This theory is developed by Abraham Maslow. This is a theory containing a five layer model of human needs, frequently portrayed as hierarchical levels within a pyramid. Maslow indicated that people are motivated to attain certain needs and that some needs take superiority over others. Our most basic need is for physical survival like food, water, and shelter and this will be the first thing that motivates our behavior. Once that level is satisfied the next level up is what motivates us, and so on.

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.