Pretty confident that it is A, judging by that the word composition is used as a combination or a ratio of 2 things. Also none of the other options make sense.
It depends on the indicator type; typically if it is darker in some way, it is positive
Answer:
The answer is blood sugar
Explanation:
1) False 2(False 3(True 4(True 5(False 6(False 7(False 8(True 9(False 10( True
