Consider the following statements regarding 'fronts' : 1. The movement of a front causes a slow change in weather in the area over which it moves. 2. Cold fronts are associated with thunderstorms. 3. Warm front is the boundary between an advancing mass of warm air where it is overriding and rising above a mass of colder air. Which of the statements given above is/are correct ?

According to the principles of physical geography (Climatology):

• Statement 1 is incorrect: The passage of a front is characterized by abrupt changes in temperature, wind direction, and pressure. Weather changes associated with fronts are typically rapid rather than slow.
• Statement 2 is correct: In a cold front, the dense, cold air moves rapidly and wedges itself under the warmer air, forcing it to rise sharply. This intense vertical uplift leads to the formation of cumulonimbus clouds, which are frequently associated with thunderstorms and heavy precipitation.
• Statement 3 is correct: A warm front occurs when an advancing warm air mass encounters a colder air mass. Because warm air is less dense, it glides up and over the retreating cold air (a process called overriding), leading to the formation of clouds and gradual precipitation.

Therefore, statements 2 and 3 are correct, making Option C the right answer.