Statement and Assumptions
Statement: Because of the large number of potholes in road X, reaching airport in time has become difficult.
I. Reaching airport in time may not be always necessary.
II. There is no other convenient road to the airport.
|A||If only assumption I is implicit|
|B||If only assumption II is implicit;|
|C||If either I or II is implicit;|
|D||If neither I nor II is implicit|
|E||If both I and II are implicit.|
(i) INVALID: Not related to the statement. There is no proof in the statement about reaching airport all the time being a necessity.
(ii) VALID: Root Cause. Since the author focuses on the fact that because of too many potholes on road X, it is difficult to reach the airport on time shows that there is no other convenient road which can be opted for.