When the efficient quantity is produced . A. producer surplus is maximized B. consumer surplus is maximized C. buyers and sellers acting in their self-interest do not promote the social interest D. total surplus is maximized

The correct answer is letter B

Consumer surplus is therefore a measure of economic well-being, and the higher its value, the greater the benefit to consumers in that market. We will thus have that the producer surplus is equivalent to the area of the polygon determined by the supply curve and a certain marketing price.

Consumer surplus is one component of the economic surplus, a concept that gained popularity with the English economist Alfred Marshall.

buying socks and buying shoes are independent events.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.