The fiscal year in Tamil Nadu runs from:

January-December
April-March
July-June
October-September

The fiscal year in Tamil Nadu runs from April to March. The fiscal year is a 12-month period used for accounting and financial reporting purposes. It is typically the same as the calendar year, but some countries use a different year. In India, the fiscal year runs from April 1 to March 31. This is because the Indian government’s financial year starts on April 1. The fiscal year is important because it is used to track government revenue and expenditure. It is also used to calculate taxes and other financial obligations.

Option (a), January-December, is incorrect because the fiscal year in Tamil Nadu does not run from January to December.

Option (b), April-March, is the correct answer because the fiscal year in Tamil Nadu runs from April to March.

Option (c), July-June, is incorrect because the fiscal year in Tamil Nadu does not run from July to June.

Option (d), October-September, is incorrect because the fiscal year in Tamil Nadu does not run from October to September.