Why is it E and not A?
Started by
James-Nash
· started 2020-09-09 11:15
· last activity 2020-10-14 14:38
· 2 replies
I was initially leaning towards E but picked A because the passage only discusses the casing in the context of protecting water from oil.
-
yckim2180
· 2020-10-13 18:58
Hi, just following up on this question. Could someone please explain?
-
Victoria
· 2020-10-14 14:38
Hi @James-Nash and @yckim2180,
Happy to help!
Answer choice (E) is correct because lines 30 to 33 tell us that "...without appropriate safeguards, wells that penetrate both groundwater and oil or saline water formations inevitably contaminate the groundwater."
The passage then goes on to explain that this contamination can be prevented using casing.
Oil is not the only thing that can contaminate groundwater. The addition of salt water would also contaminate the groundwater by rendering it unpotable.
Hope this helps! Please let us know if you have any further questions.
Sign in to reply.