Paragraph 2 was included in the passage in order to

• state typical careers that young children like to pretend to be when they play grown up
provide a historical perspective of jobs that no longer exist and to show how careers change
detail various challenges of the past that were solved by humans taking on the job
clearly define two types of careers and the type of work
that is associated with each

Paragraph 2 was included in the passage to provide a historical perspective of jobs that no longer exist and to show how careers change. By highlighting examples of typical careers that young children like to pretend to be when they play grown up, such as doctors, firefighters, police officers, and astronauts, the passage sets the stage for discussing how the nature of work has evolved over time. Additionally, the mention of various challenges of the past that were solved by humans taking on particular jobs serves to illustrate the dynamic nature of careers and how they have adapted to meet the needs of society. This historical context helps to frame the discussion of how career paths have shifted and diversified over the years.