Select all that apply. which of the following are ways that aids cannot be transmitted? sexual activity with someone who has it dirty (shared) needles used by drug addicts poorly tested blood transfusions insect vectors sneezing childbirth

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.