Acrophobia is a word of greek origin. Derives from <em>Acros</em>, which means "summit", and <em>phobos</em>, which means fear.
Acrophobia is thus, the fear of heights. These can be a serious medical issue in certain situations, as for example, in the scenario described in the question in which acrophobia is affecting Ben so much that he quit his job.
6000 with the drug with the active ingredient being tested.
Explanation:
The group that was given the drug with the active ingredient is the group that is receiving the experimental treatment which is 6 000 with the factor being tested.
