Final answer:
The paragraph outlines the reasons behind the vine's invasive nature and contrasts its initial beauty with its current status as a pest.
Step-by-step explanation:
The best summary of paragraph 2 is option C) The paragraph outlines the reasons behind the vine's invasive nature and contrasts its initial beauty with its current status as a pest. The paragraph describes the transformation of a once attractive vine into an invasive pest by highlighting the reasons for its invasiveness and comparing its initial attractiveness with its current status as a nuisance.