Use the passage to answer the question.

Question

For what purpose does the author include the sentence about using the centrifuge as a doorstop?

(1 point)
Responses

to highlight a problem with a current system
to highlight a problem with a current system

to criticize the inventor’s waste of time
to criticize the inventor’s waste of time

to show a negative opinion of centrifuges
to show a negative opinion of centrifuges

to indicate a positive opinion of recycling
to indicate a positive opinion of recycling

Answer 1

The correct response is: to highlight a problem with a current system.