Answer: A. It emphasizes that all the animals experience the same kind of result
Step-by-step explanation:
The effect that the repetition of sentence patterns have in this excerpt is that it shows that it emphasizes that all the animals experience the same kind of result.
They all had same experiences as they found themselves when they looked in the hole. The cow found a cow in the hole. The tiger also found nothing but a tiger in the hole likewise the other animals too.