The correct answer is B. frontolysis.
Frontolysis is the process of destruction or dying of fronts. It is caused by the mixing of air masses along the front, which can occur due to wind shear, convergence, or divergence. Frontolysis can also be caused by the passage of a cold front over a warm front, which can cause the warm air to be lifted and the cold air to be pushed down.
Frontogenesis is the process of formation of fronts. It is caused by the convergence of air masses, which can occur due to the rotation of the Earth or the presence of mountains. Frontogenesis can also be caused by the passage of a cold front over a warm front, which can cause the warm air to be lifted and the cold air to be pushed down.
Both frontogenesis and frontolysis are important processes in the atmosphere. Frontogenesis is responsible for the formation of weather fronts, which can bring precipitation and other weather changes. Frontolysis is responsible for the dissipation of weather fronts, which can bring clear skies and calm weather.
The answer to the question is B. frontolysis.