In a problem-focused visit, for which chief complaint/concern would it be most important to elicit a pertinent family history as part of the HPI?
a) "I sprained my ankle while playing soccer"
b) "I have had sinus pressure and congestion for 6 days"
c) "For the past 3 months I have experienced chest pain while walking up stairs"
d) "I was working in my garden yesterday and have developed an itchy rash."