According to the textbook, the only way to know if your product or service is what people want is by talking to them library, internet and gumshoe research surveying them conducting brainstorming sessions interviewing industry experts

conducting brainstorming sessions

Explanation:

When the product or service is required by people, patronage would increase. This can be confirmed by vallidating the rate of demand, which might be in a form of conducting a brainstorming sessions. This is generally done by the customer service department.

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