Which statement about anaerobic respiration is true?

Um what statements?
here’s some info on anaerobic respiration though :) : Anaerobic respiration is respiration using electron acceptors other than molecular oxygen (O2). These terminal electron acceptors have smaller reduction potentials than O2, meaning that less energy is released per oxidized molecule. Therefore, anaerobic respiration is less efficient than aerobic.

The first statement is

Dna overload will occur