Correct answer: (A) Net decrease in standard Gibbs free energy; (C) First phase includes glucose phosphorylation; (D) Net gain of NADH
Explanation
Glycolysis converts glucose to pyruvate, with a favourable net standard free-energy change. The investment phase phosphorylates glucose;the payoff phase generates net NADH. Glyceraldehyde3-phosphate is an intermediate, not final product. Hence **A, C, D**.
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