Which of the following is one of the assumptions of perfect competition?

The correct answer is C. Many buyers and many sellers.

Perfect competition is a market structure in which there are many buyers and sellers of a homogeneous product, and no one buyer or seller has a significant impact on the market price. In a perfectly competitive market, buyers and sellers have perfect information about the product and the market, and there are no barriers to entry or exit.

Option A is incorrect because a market with few buyers and few sellers is a monopoly. A monopoly is a market structure in which there is only one seller