The correct answer is: Only assumption I is implicit.
The statement “Traffic jams on most of the roads in the city have become a regular feature during monsoon” does not provide enough information to support assumption II. It is possible that the number of vehicles coming on the roads is the same in monsoon as in other seasons, but that the roads are more slippery and prone to accidents in monsoon, leading to traffic jams. However, the statement does provide enough information to support assumption I. If the material used for road construction cannot withstand the fury of monsoon, then it is likely that there will be more pot holes on the roads in monsoon, which can lead to traffic jams.
Here is a table that summarizes the relationship between the statement and each assumption:
| Assumption | Is it supported by the statement? |
|—|—|
| I. Material used for road construction cannot withstand the fury of monsoon resulting into innumerable pot holes on the roads. | Yes |
| II. Number of vehicles coming on the roads is much more in monsoon as compared to other seasons. | No |
Therefore, the correct answer is: Only assumption I is implicit.