The correct option is B All of the above
Endangered species:
Endangered species are the species which are at high risk of extinction in the wild. Examples of endangered plants in India include Rauwolfia serpentina, Santalum album (Sandalwood) and Cycas beddomei (cycas).
Rauwolfia serpentina:
Rauwolfia serpentina (devil peppers) is an endangered plant species of India that is over-exploited for its use in the treatment of high blood pressure or hypertension.
Santalum album (Sandalwood):
Santalum album is used in the treatment of common cold, cough, liver diseases ,bronchitis, urinary tract infections, fever, sore throat, gallbladder problems, headache, and cardiovascular diseases. The medical benefits of this plant causes it to be highly exploited by humans and is a reason behind it being an endangered plant species in India.
Cycas beddomei:
The male cones of the Cycas beddomei are used for rheumatoid arthritis and muscle pains. It is also an endangered plant species that is victim to over exploitation.
Final answer
d. All of the above