Question

Why are a variety of instruments needed to measure change in the climate system?
a. A different type of instrument is needed for each different climate.
b. The climate system involves a number of different factors that are measured differently.
c. Climate is determined over a number of years, rather than a short period of time.
d. Different areas have developed different instruments to measure climate change.

Answer 1

A Variety of instruments needed to measure change in the climate system because : B. The climate system involves a number of different factors that are measured  differently
For example Wind and Temperature. Both of this factors will heavily affect the climate system but both of these factors are so different and they need different instruments to be measured

Answer 2

your answer is letter B.