People should completely avoid using a certain artificial fat that has been touted as an alternative for those whose medical advisers have advised them to reduce their fat intake. the artificial fat can be used in place of ordinary fats in prepared foods and has none of the negative health effects of fat, but it does have a serious drawback: it absorbs certain essential vitamins, thereby preventing them them from being used by the body.
in evaluating the columnist's position, it would be most useful to determine which of the following?
a) whether increasing one's intake of the vitamins can compensate for the effects of the artificial fat
b) whether the vitamins that the artificial fat absorbs are present in foods that contain the fat
c) whether having an extremely low fat intake for an extended period can endanger the health
d) whether there are any foods that cannot be prepared using the artificial fat as a substitute for other fats
e) whether people are generally able to detect differences in taste between foods prepared using the artificial fat and foods that are similar except for the use of other fats