Final answer:
The appropriate data collection mode for research on a product targeting the business-to-business market is either in-office interview or business-to-business surveying.
Step-by-step explanation:
The data collection mode that would be more appropriate for research on a product requiring demonstration targeted to the business-to-business market is in-office interview.
Business-to-business surveying could also be a suitable data collection mode as it allows for targeted questioning and gathering insights specifically from businesses.
Mall-intercept and drop-off survey would be less appropriate for researching a product targeted to the business-to-business market as they are more commonly used for consumer market research.