Jane sets up an experiment to find out if kittens prefer skim
milk, 2% milk, or whole milk. She puts out a cup of skim milk for 5
kittens and then measured how much the kittens drank during a day.
The next day, she used the same kittens and put out a cup of 2%
milk. The last day, she used the same kittens and put out a cup of
whole milk. She discovered that the kittens preferred whole milk.
There are many problems with this experiment. Each of the following
would improve the
experiment except which one?
Select one:
A.) The amount of any other food should be kept constant on each
day.
B.) The milk should be served at different temperatures.
C.) Each kitten should be tested and measured separately.
D.) The treatments should be repeated several times.
E.) The different milks should be given in random order.