Which of the following represents a way in which children and infants can be exposed to tobacco products?
a. particles adhering to clothes
b. secondhand smoke
c. particles lingering on furniture
d. all of the above

From the given choices in the item presented, the ways in which the children and infants can be exposed to tobacco are: (1) particles adhering to clothes, (2) secondhand smoke, (3) particles lingering on furniture. Hence, all of the above. The answer should be D. It should be noted that these types of exposure imposes higher risk of illments than the first hand smoking.