The answer is C. A variety of antibiotics
B ~ You cannot tell if someone was touching your hand
Hope this helps! ^^
The slopes show that sucrose gradient affects change in weight.
The slopes will be different because higher gradient concentration of sucrose will result in the higher amount of water moved. This means the higher sucrose gradient concentration, the more change in weight of the water.
One way is to see if it responds to stimulants or if it reproduces
