Professor: Members of most species are able to communicate with other members of the same species, but it is not true that all communication can be called “language.” The human communication system unquestionably qualifies as language.
Professor
Even though most species can communicate with each other, we don't want to call all that communication "language". Human communication, meanwhile, is clearly language (in fact, language is kind of defining trait of being human).
Student
How do you know that the highly evolved communication systems of songbirds, dolphins, honeybees, and apes are not languages?
Evaluate
Even though the question stem just asks how Person 2 interpreted the first person, this question stem always means "misinterpreted".
If I were the professor, I would answer the student by saying, 'What are you talking about? I never said that all those animals you just mentioned aren't using languages. I was just saying some forms of communication aren't language, but those ones you mentioned are."
Goal
The student must be hearing "only the human communication system is language", because otherwise why would she be responding as though the Professor had made any judgment on whether dolphins, bees, etc. also possess language?