Which of the following is Gossen’s first law: May 3, 2021 by admin Question: Which of the following is Gossen’s first law: A. Law of Diminishing Marginal Utility B. Law of Equi Marginal Utility C. Law of substitution D. Law of Diminishing Returns Answer» a. Law of Diminishing Marginal Utility Note: The above multiple-choice question is for all general and Competitive Exams in India.