John wants to test how temperature affects the mass of sugar that can be
dissolved in water. which of the following factors must be the same between
the control group and the experimental group?
o
a the mass of the sugar
ob. the time of day
o
c. the temperature of the water
o
d. the volume of the water

Choice A

Explanation:

the time of day is irrelevant as is the volume

this leaves choices and C now your testing how the temperature affects the mass so your using different temperatures in your experiment this eliminates choice C leaving choice A

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .