DIRECTION: In the following questions, out of the four alternatives, choose the one which can be substituted for the given words/ sentence.
oculist (N.) : a doctor who examines and treats PEOPLE s eyes
optimist (N.) : a person who always expects good things to happen/ things to be successful
OBSTETRICIAN (N.) : a doctor who is trained in the branch of medicine concerned with the birth of children
optician (N.) : a person who examines people s eyes and recommends and SELLS glasses