Final answer:
A company employing straight commission salespeople and high sales volume is likely to have the largest total personal selling expenses.
Step-by-step explanation:
The company employing straight commission salespeople and high sales volume is likely to have the largest total personal selling expenses. Straight commission is a compensation scheme where salespeople receive a percentage of the sales they make, and having high sales volume means more sales are being made. This combination would result in higher total personal selling expenses for the company.