Final answer:
The percentage of sales method sets promotional budgets based on a fixed percentage of sales, which is theoretically weak and may not adequately fund promotional efforts in response to market conditions.
Step-by-step explanation:
The percentage of sales method of setting the promotional budget is a common yet theoretically weak approach. This method involves allocating a predetermined percentage of sales revenue for promotional activities. The percentage selected may be one that makes the entrepreneur or business manager feel comfortable, but it does not necessarily reflect the needs of the marketing campaign or the competitive dynamics of the market. The critiquing point of this method is that it assumes a direct and static relationship between sales and promotion, which often isn't the case. Depending on the industry and market conditions, the promotional budget might need to be more flexible and responsive. Therefore, using a fixed percentage can limit a company's ability to adequately fund promotional efforts during crucial times or to capitalize on unique market opportunities.