Baby boomers are those people born between
a. 1935 and 1945.
c. 1955 and 1975.
b. 1946 and 1964.
d. 1965 and 1975.

Baby boomers is the generation born just after WW2: between 1946 and 1964.

After WW2 many countries, including the US experienced an increase in the number of births caused by the return of men from the war and general increased optimism

Where people were very broke no jobs were available and everyone was struggling