To answer this question, you need to have knowledge about the national tree of India. Let's go through each option to understand why it is correct or incorrect:
Option A) Palm tree - This option is incorrect because the national tree of India is not a palm tree.
Option B) Banyan tree - This option is correct because the national tree of India is the Banyan tree. The Banyan tree (Ficus benghalensis) is a large and ancient tree that is native to India. It is known for its extensive aerial roots that grow down from the branches and form secondary trunks.
Option C) Mango Tree - This option is incorrect because the national tree of India is not a mango tree.
Option D) Olive Tree - This option is incorrect because the national tree of India is not an olive tree.
The correct answer is B) Banyan tree. This option is correct because the Banyan tree is the national tree of India.