Final answer:
In a perfectly competitive market, an aggressive advertising campaign may not be the most effective way to increase short-term sales.
Step-by-step explanation:
In a perfectly competitive market, creating an aggressive advertising campaign for a product can have limited effectiveness in increasing short-term sales. This is because in a perfectly competitive market, many firms offer similar products at similar prices, making it difficult for advertising alone to have a significant impact on sales. Since customers in this market are price-sensitive, focusing on pricing strategies and improving product quality may be more effective in attracting customers and increasing sales.