The correct answer is “Combination of all the above”.
Articles 19(1)(d-e), 301 - 307 collectively contribute to the regulation of freedom of inter-state trade and commerce in India.
While Article 19(1)(d-e) does deal with certain aspects of trade and commerce, it is more broadly concerned with the right to freedom of occupation, trade, and business. Articles 301 to 307 specifically address inter-state trade and commerce.