The level of competition least beneficial to consumers is

Monopoly

Explanation:

The level of competition least beneficial to consumers is monopoly. In monopoly, there is only one or very few sellers which sell their products to the customers on the prices of their own liking. Because of no competition, customer has to pay higher prices. Moreover, no substitutes are av

available in the market as well which definitely effects customers. For example, Microsoft Window. Monopoly has bad impact on the customers and it is very ideal scenario for the seller in order to earn more profits.

for submitting your question to

the answer to your question is : c) a government agency or homeowner

due to his line of work, he is most likely employed by a government agency or homeowner due to the other choices not being logical haha.