Answer:
emotion on the quality of a painting.
Explanation:
Scientific experimentation involves certain step by step methods to test a hypothesis or observation. It can be employed to a testable observation and involves logic and reasoning. The results of a scientific experiment are objective.
The effect of gravity on the movement of an object, adrenaline on the mating behaviors of the animals and nutrients on the gender of offspring can be tested in an scientific experiment and would give an objective result.
But, effect of emotions on the quality of a painting cannot be tested by using a scientific experimentation because it would give a subjective result.
