The correct answer is: A. a-2, b-4, c-1, d-3
Here is a brief explanation of each option:
a. Punishment for identity theft: The punishment for identity theft under the IT Act, 2000 is imprisonment of 3 years and fine of Rs. 1 lakh.
b. Residuary penalty: The residual penalty under the IT Act, 2000 is a fine of Rs. 25,000.
c. Penalty for failure to furnish information: The penalty for failure to furnish information under the IT Act, 2000 is a fine of Rs. 5,000 per day.
d. Punishment for cyber terrorism: The punishment for cyber terrorism under the IT Act, 2000 is imprisonment for life.
I hope this helps!