One of the important features of perfect competition is_____?

Step 1: Analyze the question The question asks for an important feature of perfect competition, a market structure in economics.

Step 2: Recall the concept Perfect competition has these main features:

• A large number of buyers and sellers
• A homogeneous (identical) product
• Free entry and exit of firms
• Perfect knowledge of market conditions, including prices
• Perfect mobility of goods and factors of production
• Firms are price takers, so no single firm or buyer can influence the price

Step 3: Test each option

• A. Adequate knowledge of existing prices. This is correct. Buyers and sellers know the prevailing prices, so no seller can charge more than the market price without losing all of their customers.
• B. The influence on prices by individual economic units. This is wrong. It describes monopoly or oligopoly. In perfect competition, individual firms are price takers.
• C. The restriction in terms of movement of goods and services. This is wrong. Perfect competition has free movement of goods and resources, not restriction.
• D. The administration of a centralized price system. This is wrong. Prices are set by demand and supply in the market, not by a central authority. Centralized pricing belongs to a command economy.

Step 4: Answer The correct option is A. Adequate knowledge of existing prices.

Exam tip: For perfect competition, think "many, same, free, aware":

• Many buyers and sellers
• Same (homogeneous) products
• Free entry, exit and movement
• Aware, meaning perfect knowledge

Any option that mentions control, restriction, or influence over price points to imperfect competition, so you can eliminate it quickly.