What is a ‘control’ in an experiment?
A. A person who oversees the experiment to make sure it is following proper procedures.
B. The variable controlled by the scientist to affect the dependent variable.
C. The name for the set of independent and dependent variables that will be controlled by the scientist.
D. A version of the experiment that is unchanged to make sure the experimental data is not due to chance.

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.