What do the words "remain stationary" mean in sentence 1, paragraph 4 of the passage

A．Henry Ford's job at the Michigan Car Company taught him how to make automobiles.
B．People didn't like the first "horseless carriage" because it was so noisy.
C．Henry Ford's inquisitive nature and determination are what helped him invent the Model T.
D．Children can learn a lot by experimenting with objects and asking questions.

A．Many illegal workers look for work in areas near major cities.
B．Employers never supply transportation to the place of work.
C．Illegal workers do not present any documents in order to get the job.
D．The illegal workers do jobs that others would consider undesirable.