What are the first indications that charlie's intelligence might be temporary?

Charlie, and the reader as well, both begin to have an inkling that his intelligence may not be permanent as he listens to Dr. Nemur's presentation in "Progress Report 13."  Charlie even realizes that Nemur did not take into account his rapid rise in intelligence, and that now, Charlie may even regress into a lower IQ than before the experiment.

b)and

is the answer.

its because you eat a lot of food and that can lead to many heath problems like diabetes or becoming very over weight and fat etc.

the correct answer is c. analytical reasoning. it is when you analyze the situation to form conclusions.