Question

the article says:
the water is cleaned in three very advanced steps. it comes out pure enough to drink. most of it is put into ponds made by scientists. the bottom lets water pass through slowly. it filters into the groundwater basin below.
the author uses this passage mostly to help the reader ____________.
a. understand how water is cleaned for people to drink
b. imagine what a groundwater basin is made of
c. understand how water is sent back into the sea
d. imagine what a groundwater basin looks

Explanation:

The passage focuses on the process of cleaning water (three advanced steps, becoming pure enough to drink, being put into ponds, and filtering into groundwater basin). Option A aligns with the main content about water cleaning for drinking. Option B and D only mention groundwater basin which is a part of the process. Option C about sending water back to the sea is not in the passage.

Answer:

A. understand how water is cleaned for people to drink