The purely competitive firm should close down when its price is less than its

In a purely competitive market, firms are price takers, meaning that they have no control over the market price. If a firm's price falls below its average variable cost, it means that the firm is not even able to cover its variable costs, such as labor and materials. In this situation, the firm is better off shutting down and minimizing its losses rather than continuing to operate at a loss. Therefore, the purely competitive firm should close down when its price is less than its average variable cost. This is because continuing to produce and sell at such a price would result in a greater loss than shutting down.