Akio Has Decided to Improve Her Health by Incorporating Exercise

Akio has decided to improve her health by incorporating exercise into her lifestyle. She tells her friend Ewan that she has taken up the sport of Tae Kwon Do. Ewan laughs and says, "That's not a sport! Sports have teams!" Akio disagrees, because, she says, "Any kind of organized physical activity is a sport, even if you're the only one doing it." Who is correct, and why?

A) Neither is objectively correct.Personal experience has taught each of them a different prototype for the concept of sport.
B) Ewan, because the word sport would not be plural most of the time if it referred to individual activities.
C) Ewan, because the word sports is always short for "sports teams."
D) Akio, because the word is derived from the Middle English word disport, which means to amuse or divert oneself.
E) This cannot be determined because there is no consensus about what exactly the term 'prototype' actually means.