Explanation:

- Option 1: Gujarat

- Gujarat is known for its economic opportunities and thriving industries.

- However, it was not the state with the highest number of immigrants in 2001.

- Option 2: Maharashtra

- Maharashtra received the largest number of immigrants.

- It is a major economic hub, especially Mumbai, drawing people for job opportunities.

- Your Answer Is Right

- Option 3: West Bengal

- West Bengal shares an international border with Bangladesh.

- It has a significant number of immigrants, but not the highest.

- Option 4: Uttar Pradesh

- Known to be populous but not the top destination for immigrants.

- It experiences more internal migration compared to international.

Therefore, Maharashtra was indeed the state receiving the largest number of immigrants as per the 2001 Census in India.