Correct Option: A. Increase a company's operating cost Detailed Explanation: 1. Understanding Personal Selling: Personal selling involves direct interaction between a salesperson and a potential customer. This method is often used to build relationships, understand customer needs, and provide tailored solutions. While personal selling can be highly effective in closing sales and building customer loyalty, it also comes with certain disadvantages. 2. Why Option A is Correct: - Increased Operating Costs: Personal selling typically requires a significant investment in human resources. Companies need to hire, train, and compensate sales personnel. This includes salaries, commissions, benefits, and training costs. Additionally, there are costs associated with travel, entertainment, and other expenses incurred while meeting clients. All these factors contribute to higher operating costs for the company. - Resource Allocation: Companies may need to allocate more resources to personal selling compared to other marketing strategies, such as advertising or digital marketing, which can reach a larger audience at a lower cost per contact. 3. Why the Other Options are Incorrect: - Option B: Decreases a company's operating cost - This option is incorrect because personal selling generally increases costs rather than decreases them. The need for a dedicated sales force and the associated expenses contradict the idea of reduced operating costs.

• Option C: Increases a company's number of customers
• While personal selling can lead to an increase in customers due to the personalized approach, this is not a guaranteed outcome. The effectiveness of personal selling depends on various factors, including the skill of the salesperson and the market conditions. Therefore, this option does not directly address the disadvantages of personal selling.
• Option D: Reduces a company's area of patronage
• This option suggests that personal selling limits the geographical reach of a company. However, personal selling can actually enhance a company's area of patronage by building relationships and expanding networks. It does not inherently reduce the area of patronage; rather, it can help penetrate deeper into existing markets or even enter new ones.

Common Pitfalls:

• Assuming Personal Selling is Always Effective: While personal selling can be beneficial, it is not always the most cost-effective method for every business or product. Companies must evaluate their specific circumstances and market conditions.
• Neglecting Other Marketing Strategies: Relying solely on personal selling can lead to missed opportunities in other marketing channels that may be more efficient or effective in reaching a broader audience.

Revision Summary:

• Personal selling increases a company's operating costs due to expenses related to hiring, training, and compensating sales personnel.
• It is not guaranteed to increase the number of customers or reduce the area of patronage.
• Companies should consider the cost-effectiveness of personal selling compared to other marketing strategies.
• Understanding the balance between personal selling and other marketing methods is crucial for effective business strategy.