The correct answer is: d) Both b & c
Fog is a common phenomenon during the monsoon and winter seasons. It is caused by the presence of water vapor in the air that condenses around tiny particles in the atmosphere, such as dust or smoke. The amount of fog that forms depends on the temperature and humidity of the air.
During the monsoon season, the air is warm and humid, which creates ideal conditions for fog to form. The monsoon season is also a time of heavy rainfall, which can further contribute to the formation of fog.
During the winter season, the air is cold and dry, which can also create ideal conditions for fog to form. However, in the winter, the air is also often stable, which means that the fog does not tend to dissipate as quickly as it does in the summer.
As a result, fog is a common phenomenon during both the monsoon and winter seasons. It can be a nuisance, as it can reduce visibility and make driving hazardous. However, it can also be a beautiful sight, and it can create a sense of mystery and atmosphere.