Answer: (2) Demand-side market failure
Explanation:
The demand side market failure is one of the type of market effect that basically occur due to the production of the negative response and the effect by the various types of marketing techniques like surveys and the focus groups.
The market failure demand side is one of the type of economical situation in which the customers are willing to pay for the specific products and the services in the market which is not fully capture.
According to the given question, the demand- side market failure is one of the example that best illustrating the given situation. Therefore, Option (2) is correct answer.