The intended readers of the passage are

A．can be used interchangeably on all Occasions
B．are different in that the latter has a broader sense
C．had the same meaning in the past
D．both refer to the state of your well-being

A．the kind of life that a person may expect to live
B．the mode of life that a group of people have lived
C．the length of time that a person or an animal has lived
D．the length of time that people may expect to live