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: Boykinia intermedia is a plant species native to northwestern Oregon and eastern Washington. Some publications reported the species from northern Idaho as well but these citations appear to have been based in misidentified specimens. The species grows in forests on stream banks and lake sides at elevations up to 700 m.Boykinia intermedia is a perennial herb spreading by means of stolons running along the surface of the ground. Stems are up to 70 cm tall.
Question: The document can be classified to which topic?
Options: 1)EducationalInstitution, 2)NaturalPlace, 3)MeanOfTransportation, 4)Plant
4