Give a good reply to this class discussion answer: Regarding the possibility of constructing a portfolio of stocks with an expected return equal to the risk$-$free rate, it's theoretically challenging but not impossible under specific conditions. In the real world, the risk$-$free rate is typically represented by the yields of government securities like U$.$S$.$ Treasury bills, which are considered safe with virtually no risk of default. To achieve an expected return similar to this with a portfolio of stocks$$a much riskier asset class$$would require a very careful selection of stocks, possibly focusing on those with lower volatility and employing strategies like hedging to reduce risk. However, this is generally less common because equities are expected to yield higher returns to compensate for higher risks compared to risk$-$free securities