I’m confused very confused
Answer:C (Gives the background and purpose of an experiment)
Explanation: I'm doing the test, this is just a some what knowing guess, hope its right.
Did you ever finish this or ?
It should not be controversial: it would only make the research less reliable since people would have their opinions about the topic that they would want to defend. It should also not be obscure: then it's hard to check.
The best answer is that it should be multifaceted: it should include a number of aspects, not just one, so that the test can check for those aspects, not just one.