Type the correct answer in the box. spell the word correctly. where is information about substances kept? [ ]safety data sheets hold information regarding properties of a particular substance. it also the reader to understand the safe handling of a substance.

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.