Step 1: Understand what fermentation is. Fermentation is a process that converts sugar into acids, gases, or alcohol using microorganisms like yeast or bacteria.
Step 2: Learn about anaerobic processes. Anaerobic means that the process occurs without oxygen.
Step 3: Identify the types of fermentation. The main types of fermentation are lactic acid fermentation, alcoholic fermentation, and acetic acid fermentation.
Step 4: Determine if these types of fermentation are anaerobic. All three types (lactic acid, alcoholic, and acetic acid) primarily occur without oxygen.
Step 5: Conclude that the question is asking about fermentation types that do not require oxygen, which includes all the listed types.
