1. The main difference between perfect competition and monopolistic competition is that in perfect competition, products are identical, while in monopolistic competition, products are similar but differentiated. 2. A business in monopolistic competition may have price-setting power primarily due to product differentiation, which allows firms to influence prices. 3. Advertising provides information to consumers about prices, which may encourage price competition among firms. 4. Product differentiation under monopolistic competition means that each business charges slightly different prices due to unique product features. 5. The potential consequence of breaking a collusive agreement in an oligopoly market is loss of profits, as firms may retaliate by lowering prices. 6. In countries where explicit collusion is illegal, the primary drawback for businesses engaging in collusion is the risk of being caught and fined. 7. The degree of concentration in an oligopoly market is measured by a ratio that reports the percentage of output accounted for by the businesses in the industry. 8. A multinational tech giant operates in an oligopoly market, characterized by a few large firms dominating the industry. 9. A key characteristic of an oligopoly market is that it consists of a few firms, not many small firms or a single dominant firm. 10. Products in an oligopoly market can be identical or differentiated, depending on the industry.