"How a Children's Toy Could Help
Fight Malaria"
by Jason Daley
"There are more than a billion people around the world who have no infrastructure, no roads, and no electricity," says Manu Prakash, a physical biologist at Stanford and inventor of the new gadget. When he visited Uganda in 2013 he found that clinics either did not have centrifuges or didn't have the juice to power them. "One clinic used its broken centrifuge as a doorstop," Prakash tells Devin Powell at Nature.
For what purpose does the author include the sentence about using the centrifuge as a doorstop?
(1 point)
a. to show a negative opinion of centrifuges
b. to highlight a problem with a current system
c. to indicate a positive opinion of recycling
d. to criticize the inventor's waste of time