The main federal features of the Indian Constitution are1. Division of powers2. Supremacy of Constitution3. Dual citizenship4. Bi-cameral legislature Choose the correct Codes:Select one:a. 2 and 3b. 1, 3 and 4c. 2, 3 and 4d. 1,2 and 4

The correct answer is d. 1,2 and 4.

Here's why:

1. Division of powers: This is a federal feature where powers are divided between the central and state governments.

2. Supremacy of Constitution: This means the constitution is the supreme law of the land and all laws passed by the government must be in line with the constitution. This is also a federal feature.

3. Dual citizenship: This is not a feature of the Indian Constitution. India follows single citizenship which is a feature of a unitary system, not a federal system.

4. Bi-cameral legislature: This is a federal feature where the legislature is divided into two houses - the Lower House (Lok Sabha) and the Upper House (Rajya Sabha) in the case of India.

So, the main federal features of the Indian Constitution are the division of powers, supremacy of constitution, and bi-cameral legislature. Hence, the correct answer is d. 1,2 and 4.