I think it is C. However, it should just be rock and water/ice.
Answer:
,
,
,
, 
Explanation:
If the quadrilateral presented in figure is a parallelogram, then the following conditions are satisfied:
(1)
(2)
(3)
(4)
(5)
(6)
If we know that
,
and
, then we have the following results:
,
,
,
, 
Answer:
I think everglades don't have enough time or money to fix it