Read the passage from “Why Some People Catch a Cold and Others Don’t.”

“Your airway lining protects against viruses but also other harmful substances that enter airways,” senior study author Dr. Ellen Foxman, an assistant professor of laboratory medicine at Yale School of Medicine in New Haven, Connecticut, said in a statement. “The airway does pretty well if it encounters one stressor at a time. But when there are two different stressors, there’s a trade-off,” Foxman explained. “What we found is that when your airway is trying to deal with another stress type, it can adapt, but the cost is susceptibility to rhinovirus infection.”

Which details support the author’s claim that cells cannot fight two types of stress at once?

Select all that apply.

a. “What we found is that when your airway is trying to deal with another stress type, it can adapt, but the cost is susceptibility to rhinovirus infection.”

b. “Your airway lining protects against viruses but also other harmful substances that enter airways,” senior study author Dr. Ellen Foxman … said in a statement.

c. “The airway does pretty well if it encounters one stressor at a time.”

d. “But when there are two different stressors, there’s a trade-off,” Foxman explained.