Answer:
C) That the test asks users to accomplish a series of tasks.
Step-by-step explanation:
True, the usability test on the company website should be brief and not time consuming. Therefore all other steps are relevant such as asking users to do one task.
Also making sure the test is specific by ensuring it is based on a common problem or question that the users have. And should put the more importantly it should put the user experience in mind in the design.