The statement is an example of finding common ground while addressing a counter claim is that the animal testing is harmful for animals while the claim of opposition is true and the counterclaim is the medicines that are being discovered have saved the lives of humans.
Option C is the correct answer.
A counterclaim is the one that is said to oppose the prior statement while addressing any claim.
The first sentence relating to the claim of opposition representing the example of common ground where it is observed the partly agreeing nature of the speaker. The rest of the statement including the lifesaving medicines is a counter claim which is addressed by the speaker.
Therefore, the counterclaim has been referred in the statement used in part C.
Learn more about the counterclaim in the related link:
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