The option that best summarizes the process of glycolysis is:
anaerobic; 6-carbon glucose forms two 3-carbon pyruvates; forms a net total of 2 ATP.
Glycolysis is indeed an anaerobic process (it doesn’t require oxygen), converts one 6-carbon glucose molecule into two 3-carbon pyruvate molecules, and yields a net total of 2 ATP (despite producing 4 ATP in total, 2 ATP are used in the process).