Use sound economic reasoning to assess whether (and why) each of the following people may prefer to purchase insurance individually or as part of a group.

1. 65-year-old male, lifelong smoker, with congestive heart failure
2. 25-year-old male, normal weight, no known health problems
3. 35-year-old female, married, no known health problems

Do you anticipate adverse selection to be a factor with person a, b, or c? Explain, and be specific in your assumptions