Answer:
A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the 'control'.
Step-by-step explanation:
Control is the standard used for the comparison which helps to make sure that the results of a certain experiment are caused by the condition which is being tested.
In controlled experiments, only one variable is changed at a time while the other variable (controlled variable) is kept same in order to isolate the results.