Answer:
Making inquiry and research
Explanation:
When one is faced with the need to validate if an idea is the need of the customer, an inquiry and research should be made.
Meeting the need of the customers the the goal of all businesses so as to generate more revenue. This is the reason why most companies invest heavily on Research and Development.
There is need to research into the needs of the customers and the best means of meeting those needs.
Also, one can also study the industry as a whole to deduce how other firms are satisfying the needs of the customers.