Answers in order of the pictures shown:
C. One of the most important
A. The written text seems prepared
B. Both male and female characters are treacherous
D. Of a number of attempts
D. Both revisions are acceptable.
In scene 2, Caliban is still viewed as a "worker beast," in spite of being uncovered as a human. Stephano and Trinculo, however ostensibly less savvy than Caliban, still treat him like he is not really human in view of his local status and skin shading; and the way that Caliban endures this treatment and verbally abusing demonstrates that he acknowledges this mediocrity and Stephano's shaky expert also. Caliban demonstrates that he is more insightful than Stephano and Trinculo is that he understands that opportunity from Prospero is more critical than apparel or wine.
That. I doubt you want a long explanation, but I must give one, so, simply. woodpeckers are animals, which are referred to as it or that. Rude, huh?