Sarah described the following situation:
when fertilizer was added to one plant and nothing was added to another plant, there was a noticeable difference in the color of the leaves of the plants.
which of the following best describes the situation?
a. this is an example of correlation but not causation.
b. this is an example of causation but not correlation.
c. this is an example of both correlation and causation.
d. this is an example of neither correlation nor causation.