Option 1: This statement is true. Air masses form either in tropical regions or in polar regions. In tropical regions, the air is warm and contains a lot of moisture, while in polar regions, the air is cold and dry.

Option 2: This statement is true. Air masses can develop over both continents and oceans. They can form over land areas, where they are influenced by local surface conditions, or they can form over large bodies of water, where they are influenced by the temperature and moisture content of the water.

Option 3: This statement is NOT true. Air masses do not necessarily develop in cyclonic conditions. While cyclones can form in association with air masses, the formation of air masses is not dependent on cyclonic conditions.

Option 4: This statement is true. Air masses can change weather conditions as they move into a new region. The characteristics of the air mass, such as temperature, humidity, and stability, can influence the weather patterns and precipitation in the area.

Therefore, the correct answer is option 3, as air masses do not necessarily develop in cyclonic conditions.