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Question
Ruben has a new puppy and wants to feed it the best possible food. He decides on an experiment where he will feed it the very best canned food plus a dietary supplement of vitamins recommended by a veterinarian. Which of the following best describes Ruben's project?A) This is an example of a good controlled experiment.
B) Ruben needs to take measurements of the puppy's weight and height at least once a week for it to be a good experiment.
C) Ruben needs to control for the amount of exercise, water, and care that the puppy gets each week, so that they are equal from week to week.
D) Ruben needs to feed his mother's 6-year-old chocolate Shar-Pei a standard diet so he can compare his puppy with a control dog.
E) This is not an experimentthere are no controls or replicates.
Answer
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