The correct answer is option 2: Species of cotton.
Gossypium arboreum, Gossypium herbaceum, Gossypium hirsutum, and Gossypium barbadense are all different species of cotton and all four species are cultivated in India.
Gossypium arboreum and Gossypium herbaceum are commonly known as tree cotton and herbaceous cotton, respectively. These species are primarily grown in India and Pakistan.
Gossypium hirsutum, also known as upland cotton, is the most widely cultivated species of cotton in the world. It accounts for about 90% of the cotton production globally.
Gossypium barbadense, also known as extra-long staple (ELS) cotton, is known for its high-quality fibers. It is primarily cultivated in Peru, Egypt, and the United States.
In summary, all four species of Gossypium (G. arboreum, G. herbaceum, G. hirsutum, and G. barbadense) are cultivated in India for their cotton fibers.