Answer:
Baby boomers are the demographic cohort following the Silent Generation and preceding Generation X. The Baby Boom generation is most often defined as those individuals born between 1946 and 1964.
B is correct because -3.40+.08 is -3.32 because the .08 gets added to the .00 in the -3.4
The answer is conduct research to gather relevant facts and details of the era.
The rest are important but you can't really create plots or characters until you know the context that you're putting them in.
There is no passage and answer choices, so it is impossible to answer this question. I apologise.