Check the only item in which “it” does NOT refer to oil.

a

“… by throwing it away with their normal garbage…” (lines 15-16)

b

“Recycling your used motor oil keeps it out of our rivers, lakes, streams...” (lines 21-22)

c

“A primary use is to refine it into a base stock for lubricating oil.” (lines 30-31)

d

“A secondary use of the used oil is to burn it for energy.” (lines 36-37)

e

“...recycled used oil probably touches your life everyday without you even knowing it.” (lines 43-45)

Próxima Questão