Each turn of the citric acid cycle generates one atp and additional energy-rich molecules: view available hint(s) each turn of the citric acid cycle generates one atp and additional energy-rich molecules: three;
2 nadh and 1 fadh2 two;
1 nadh and 1 fadh2 four;
3 nadh and 1 fadh2 four;
2 nadh and 2 fadh2

Four; 3 NADH and 1 FADH2

Explanation:

Each turn of the citric acid cycle generates one ATP and four additional energy-rich molecules: 3 NADH and 1 FADH2.The citric acid cycle is one of the three phases of cellular respiration together with glycolysis and electron transport chain.The citric acid cycle is the second phase of cellular respiration. This phase yields carbon dioxide, water, ATP and electron carriers NADH and FADH2.The electron carriers (FADH2 and NADH) are then taken to the electron transport chain (last phase of cellular respiration) to yield more energy in the form of ATP.

Sorry i think the answer is b