Consider the following:1.Cashew2.Papaya3.Red sandersHow many of the above trees are actually native to India?

1. A

   Only one

   Only one. Red sanders is native; cashew and papaya are New World introductions.

2. B

   Only two

   Only two. Over-counts natives.

3. C

   All three

   All three. Cashew (Brazil) and papaya (Central America) are not Indian natives.

4. D

   None

   None. Red sanders (Pterocarpus santalinus) is endemic to the Eastern Ghats.

Summary. Official key is (a) only one. Red sanders is native to India. Cashew was brought from Brazil; papaya from the Americas. So only one of the three trees is actually native.