The correct answer is: Only III is implicit.
The statement “In spite of the heavy rains the traffic has not been disrupted this year” does not provide enough information to support any of the other assumptions. For example, it is possible that the traffic was disrupted in previous years, but that adequate precautions were taken this year to prevent disruption. It is also possible that the rains did not affect traffic movement this year, but that this was due to factors other than adequate precautions being taken. Therefore, the only assumption that is implicit in the statement is that adequate precautions were taken for traffic management during rainy season.
Here is a more detailed explanation of each assumption:
- Assumption I: The traffic is disrupted in rainy seasons only. This assumption is not implicit in the statement. The statement only says that the traffic has not been disrupted this year, not that it has never been disrupted in the past. It is possible that the traffic is disrupted in rainy seasons only, but the statement does not provide enough information to support this assumption.
- Assumption II: Rains do not affect traffic movement. This assumption is also not implicit in the statement. The statement only says that the traffic has not been disrupted this year, not that the rains did not affect traffic movement. It is possible that the rains did affect traffic movement, but that the disruption was not severe enough to warrant the use of the word “disrupted.”
- Assumption III: Adequate precautions were taken for traffic management during rainy season. This assumption is implicit in the statement. The statement says that the traffic has not been disrupted this year, despite the heavy rains. This suggests that something was done to prevent the traffic from being disrupted, and the most likely explanation is that adequate precautions were taken for traffic management during rainy season.