I think that 'more genuine' would complete the sentence best.
The answer could actually be "climb" or "was climbing," but traditionally should be "climb." Hope this helps :)
The story is told in strict first-person narration
Answer:
Look for sources that has some expertise.
Explanation:
Dora should pick the professor because he went to one of the best colleges in the U.S. that worked to manufacture SUVs. SUVgreatness.com was written by an anonymous source, which can not be trusted and presents an opinion about how SUVs #1 when it comes to safety.