How do moderate fevers (below 39°C or 103°F) help fight infection? A. Fevers damage amino acids and proteins.
B. Fevers prevent the growth of pathogens.
C. Fevers are part of the third line of defense.
D. Fevers inhibit cell division in red blood cells.

How is the central idea developed further? (a) the author elaborates on the treatments for allergies in adults and how they work. (b) the author quotes the reactions of experts and the methods used to conduct the study. (c) the author compares the different rates of food allergies shown in children and adults. (d) the author indicates the limitations of the study because of differences in health care.