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: Ceratozamia kuesteriana is a species of cycad in the Zamiaceae family that is endemic to the Sierra Madre Oriental of Mexico. It is restricted to steep slopes in pine-oak dominated cloud forests between Gomez Farias and Tula in southern Tamaulipas. C. kuesteriana is threatened by habitat loss and collecting. The total wild population is believed to number no more than 300 plants.
Question: The document can be classified to which topic?
Options: 1)Film, 2)WrittenWork, 3)Village, 4)Plant
4