The Experimental problem is A. Anna is dead
B. Was Anna murdered?
C. What pill was in Anna’s stomach?
D. Was Anna a drug addict

Explanation:

What is an Experimental Problem? An experimental problem is:

Step One: Right off the bat, we can eliminate A because it's not a question, and an experimental problem is supposed to be a question.

Step Two: Now that we have all questions, we have to figure out which one is too broad. We can eliminate B because although it is not too broad, it is nto specific enough, and is not necessarily science-based.

Step Three: We are between C and D, and the answer is C because it is specifically asking about a pill. In D, it is not necessarily about science, and the question needs to be more specific; it needs to be something that can be explained. With D, it is hard to test, whereas, with C, the main goal is to test.

C is the answer.

answer: tell your parents first, and wait another couple of days. if it gets any worse, then you should call and ask. and you can always take pain meds if need be.

explanation:

violet light has a shorter wavelength than blue light. violet light is scattered more than blue light. however, the human eye is less sensitive to violet than to blue. as a result, we perceive a blue sky instead of a violet sky.