The correct answer is option 3, which is "Both 1 and 2."

Statement 1 is correct. The Indian Constitution not only defines the structure of the government but also concerns itself with aspects of a desirable civil society and economy. It includes provisions related to fundamental rights, directive principles of state policy, and fundamental duties that guide the functioning of society and the economy.

Statement 2 is also correct. In 1976, amendments were made to the Indian Constitution to include fundamental duties of citizens along with their rights. These fundamental duties, listed in Article 51A, emphasize obligations such as respecting the national flag and constitution, promoting harmony, protecting public property, and striving for excellence.

Both of these statements highlight important aspects of the Indian Constitution. It not only provides the framework for the government but also addresses the role of citizens and their responsibilities towards society and the nation.