The correct answer is: c) Neem tree
The neem tree is a large, deciduous tree that is native to India. It is also known as the margosa tree or the Indian lilac. The neem tree is a sacred tree in Hinduism and is considered to be a symbol of life and prosperity. It is also used in traditional medicine and is considered to have many medicinal properties.
The neem tree is a fast-growing tree that can reach a height of up to 30 meters. It has a large, spreading canopy and a smooth, gray bark. The leaves of the neem tree are compound and have 11-21 leaflets. The flowers of the neem tree are small and yellow, and they are followed by small, green fruits. The fruits of the neem tree are about 2-3 centimeters long and they turn yellow when they are ripe.
The neem tree is a very versatile tree and it has many uses. It is used in traditional medicine, as a pesticide, as a fertilizer, and as a wood for construction. The neem tree is also a popular ornamental tree and it is often planted in parks and gardens.
The other options are incorrect because they are not the state tree of Tamil Nadu. The palm tree is the state tree of Kerala, the banyan tree is the state tree of Andhra Pradesh, and the mango tree is the state tree of Gujarat.