A student tests how well a container keeps an egg from breaking. The student places an egg in the container and drops it from a height of 10 meters. The student repeats the test three times. Which is the best reason to repeat the test several times? A. to show that all eggs have the same shell strength B. to make sure that the force of gravity remains the same Oc. to make sure that no other factors are affecting the results D. to show the effect of changing the height from which the egg is dropped​