Which choice is a controlling idea in the passage? a) you should avoid pet fur to avoid asthma attacks. b) you should avoid things that trigger an asthma attack. c) you should learn how to perform spirometry to control asthma. d) long-term control medicines for asthma are better than quick-relief medicines.

Will treating a viral infection with antibiotics affect the course of the infection? a) no; antibiotics work by inhibiting enzymes specific to bacteria. antibiotics have no effect on eukaryotic or virally encoded enzymes.b) no; antibiotics do not kill viruses because viruses do not have dna or rna.c) yes; antibiotics activate the immune system, and this decreases the severity of the infection. d) yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.