Final answer:
Multiple landspouts can form from the same thunderstorm but there is never more than one landspout present at a given time is the false statement, as multiple landspouts can occur simultaneously. So, the option is E.
Step-by-step explanation:
Landspouts are generally short-lived and are non-supercell tornadoes that form along a boundary where horizontal wind shear is present. They can be less intense than supercell tornadoes, which are associated with severe thunderstorms and can have significantly stronger winds. Supercell tornadoes benefit from the rotational motion within a supercell thunderstorm and typically last longer and are more destructive than landspouts.
It is also true that most tornadoes in California during winter are classified as landspouts. Landspouts in California are attributed to the state's unique topography and weather patterns.
Therefore, E is the correct option.