Answer:
- Concept-testing.
Step-by-step explanation:
'Concept-testing' is the kind of research that primarily intends to derive an idea from the selected audience through surveys before making the product available in the market. Such research assists to assess and evaluate the idea/concept that further helps in evaluating and deciding the attitude or reaction of the audience about the product.
As per the given description, the type of research exemplified here would be 'concept-testing' as the concept of 'V-8' brand is being tested(through the survey conducted by the appearance of unreleased version in a T.V. show) in order to 'determine whether the viewers perceived the health benefits of the product which the company intended to highlight' that helped in 'knowing the attitude of people'(towards the ads) prior to actually launching the product.