Animal testing is inhumane and very unnecessary. There are so many different options available, There is no explanation for the poisoning, burning, and killing of about 100 mill animals each year causing them pain & fear. Animals are not little humans, and even tho we share a lot of our genes with other them the way our genes work is different.
The answer would be "B. cocaine". Cocaine is an illegal stimulant unlike the other options listed above.
Two sources of light in a kitchen would be Ceiling or wall-mounted fixtures.
