If an outdoor runner develops a headache, feels tired, and has an elevated heart rate, what is the most probable cause?

a. lack of protein
b. insufficient calories
c. dehydration
d. overhydration

answer; genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes;

well wheres the question

answer; the above statement is (true);

the answer is c dandruff