What is the purpose of a usability test?

a.)to find out if instructions are complete, accurate, and easy to follow
b.)to find out if a product is worth purchasing
c.)to provide training for those using the product
d.)to test a product's appeal to potential consumers

  D) To test a product´s appeal to potential consumers.

Explanation:

  Usability testing is a technique used to evaluate a product by testing it on users. It gives direct input on how real users react to the system.

  It differs from simple market research because it involves systematic observation under controlled conditions.

  I hope this answer helps you.

im gonna take a guess and say gas vans and chambers

i think that will have something to do with the mississippi river but google will know the full answer for sure