Concept:Perfect knowledge in a perfect market depends on the free and rapid flow of information about prices, quality, and market conditions.
Explanation:Perfect knowledge means all buyers and sellers are fully aware of everything happening in the market.
This awareness can be achieved only when there is an efficient
means of communication.
With effective communication, information reaches every participant quickly and equally.
Many buyers and sellers ensure competition, but they do not automatically create perfect knowledge.
Homogeneous products ensure identical goods, but they do not by themselves inform all market participants.
A large number of traders also does not guarantee that everyone knows all market events.
Therefore, the existence of proper means of communication makes perfect knowledge possible.
Answer:C. means of communication