What can be dissolve by water
a. kool-aid packet
b. salt
c. all of them above
explain your answer.

C. All of them can be dissolved because, they are all solvents.

All of them,
Kool-Aid- when you pour the Kool-Aid into water, the little crystals go straight to the bottom because they are heavier than the water. When you stir Kool-Aid, you help dissolve the Kool-Aid in water by keeping all the crystals off the bottom and in the water.
Salt- water can dissolve salt because the positive part of water molecules attract the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

Talc (french chalk) is the ingredient