Question

what is fermentation? (2 answers are correct)

aerobic respiration

a way to get nad+ back

respiration with oxygen

it allows glycolysis to keep going

Explanation:

Fermentation is an anaerobic process (not aerobic, so "Aerobic respiration" and "Respiration with oxygen" are wrong). In fermentation, NAD+ is regenerated (so "A way to get NAD+ back" is correct). Regenerating NAD+ allows glycolysis (which requires NAD+) to continue (so "It allows glycolysis to keep going" is correct).

Answer:

B. A way to get NAD+ back, D. It allows glycolysis to keep going