Final answer:
The sales force survey technique is limited by the bias of salespeople who may believe that their sales goals are determined by their sales estimates.
Step-by-step explanation:
The answer to the question is b. False. The limitation of the sales force survey technique is that salespeople often have a bias and may believe that their sales goals are determined by their sales estimates, which can lead to inaccurate responses. This bias can stem from the salespeople wanting to meet or exceed their set goals, and thus may overestimate their sales estimates.