Answer:
The right answer to this question is option D. lactic acid fermentation.
Step-by-step explanation:
When we think of the ways of producing energy, it's very common to think of humans, because we are humans, but there are other ways of getting energy/producing it. For example, as mentioned on the question, there are some organisms that don't need much ATP and don't need oxygen to do it too, so what they do is anaerobic cellular respiration. This process uses less ATP and it's worth the work. The question mentions, too, the yogurt, and as we know, yogurt is made by the process of fermentation, and by that, option d is the best option for this question.