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.

Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups? a) re-infection by a closely related herpesvirus of a different strainb) re-infection by the same herpesvirus strainc) copies of the herpesvirus genome permanently maintained in host nucleid) copies of the herpesvirus genome permanently maintained in host cell cytoplasm