Explanation:

The Anglo-French struggle in India, primarily known as the Carnatic Wars, began in the $18^{th}$ century. These wars were fought between the British East India Company and the French East India Company for supremacy in India. The major battles and conflicts of these wars took place predominantly in the Carnatic region, which is located in the southern part of India, particularly around the Coromandel Coast. - Option A (Northern region): While there were conflicts in other regions later, the initial and primary Anglo-French struggle for dominance in India did not start in the northern region. - Option B (Southern region): The Carnatic Wars, which marked the beginning of the Anglo-French struggle for control over India, were fought primarily in the Carnatic region of South India. This is the correct answer. - Option C (Central region): The central region was not the primary theatre for the initial Anglo-French conflicts. - Option D (Western region): The western region, particularly around Bombay, was important for trade but not the main starting point for the direct military struggle between the British and French.