A survey would be reliable if it had the same results, because then it would have been proven time and time again that it is credible. It is valid when it measures to what it intends to measure, because if it didn't, how would it be valid? In order for it to be valid, it has to make sense and measure what it intends to measure. The answer is D: reliable; valid.
Honestly .B sounds the most right. If it's not that but I'm 99.9% sure it would be C.
In 1990, members of the United States Senate are appointed by their state legislatures. Hope this helped!!
Answer:
located at tropical latitudes
Explanation:
Since it is located near the equator
the factor that best explains the
climate distribution.
c. Cosmology is the answer