【单选题】Like physical anthropology, orthodontics (dentistry dealing with the irregularities of teeth) tries to explain how and why men are different; unlike anthropology, it also tries to correct those differ...
A.
Physical anthropology is concerned with aesthetics; orthodontics is not.
B.
Physical anthropology deals with the irregularities of teeth.
C.
Orthodontics tries to explain why men are different, anthropology does not.
D.
Anthropology does not try to correct differences among men; orthodontics does.