Answer:
to lend credibility to the claim that other species also use tools
Explanation: it makes more sense than all the other options B to show chimpanzees are not intelligent disproves her first point at the start of the story especially when she said accept as human because humans are the smartest animals there is and let us be honest C is just obviously wrong.
The correct answer is C. Although Peterson's comments may have been valid at one time, his book is over 30 years old.
This sentence is challenging the credibility of Peterson's book because it is old. At one point, his arguments may have been correct, but this has certainly changed over time given that over 30 years have passed since he published his book. Now, there are newer opinions about the topic, so he isn't a credible source anymore.
A. It would be completely unexpected for someone to marry someone that they are not in love with.
Ok so here are the three sentences it leads up to.
The mission was accomplished.
A dog got in her way.
The mission was finished in 15 minutes.