Answer: At the left-most point of the minimum-variance frontier.

The global minimum-variance portfolio is located at the left-most point of the minimum-variance frontier, representing the portfolio with the lowest variance among all possible portfolios of risky assets. Option A is incorrect because it refers to the entire collection of minimum-variance portfolios, not the specific global minimum-variance portfolio. Option C is incorrect because the upper right-most point represents the maximum variance portfolio, not the minimum.

Author: LeetQuiz Editorial Team