If consumer sovereignty is considered greatest in a system of pure competition, why is sovereignty still limited?

Limits to consumer sovereignty can be the price set by producers on their goods and services.  There is also competition on which goods one can purchase.  You also have to consider the purchasing power of the consumer. Consumers can only buy what the best products that they can afford.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.

the right answer is a