The answer you are looking for is A, member. The other 3 all have to do with being mindful! While a member just refers to a person. Not to mention there is no "or" in member!
Hope this helps!
Answer:
The answer is
C.
Explanation:
Because rain gauges only measure one thing when the other options can give you measurements of multiple things at once.
The correct answer is the fourth option. The other three are grammatically incorrect.
