One who specializes in treating diseases of the bones and joints is an
a. obstetrician.
b. oculist.
c. orthodontist.
d. orthopedist.

Respuesta :

It's D, Orthopedist. 
The answer is D. orthopedist. This is because orthopedists are doctors would work specifically with bones. An orthopedic surgeon is a someone would corrects bone abnormalities or injuries with method like surgery or casting. :)