Is comparative advantage based upon who can produce the most of a particular good?

Which of the following is a problem for the production of public goods?

Two assets have the following expected returns and standard deviations when the risk-free rate is 5%: asset a e(ra) = 18.5% σa = 20% asset b e(rb) = 15% σb = 27% an investor with a risk aversion of a = 3 would find that on a risk-return basis. a. only asset a is acceptable b. only asset b is acceptable c. neither asset a nor asset b is acceptable d. both asset a and asset b are acceptable

What part of the rational model of decision-making does the former business executive “elliott” have a problem completing?