Q: In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Context: Limosella is a genus of flowering plants known as mudworts. These are annual largely aquatic plants found in muddy areas worldwide.Selected species:Limosella acaulis - Owyhee mudwortLimosella aquatica - water mudwortLimosella australis - Welsh mudwortLimosella capensisLimosella inflataLimosella longifloraLimosella majorLimosella pubiflora - Chiricahua Mountain mudwort
Question: The document can be classified to which topic?
Options: 1)Building, 2)Village, 3)Plant, 4)NaturalPlace
A:
3