Can someone with statistics

a surveyor randomly interviewed 34,572 people who live in scotland to gather information on whether national healthcare is accomplishing its goals.

part a: what are the population and sample in this survey? (4 points)

part b: the survey found that 70% of smokers and 87% of non-smokers visited a family doctor at least once in the past year. do you think these approximations of the sample are close to approximations of the entire population? explain. (6 points)

i need part b