Step 1: Understanding the question.
This question is asking about the city in India often referred to as the "Manchester of India." Ahmedabad is known as the "Manchester of India" because of its flourishing textile industry, which resembles the famous textile hub of Manchester in the United Kingdom.
Step 2: Analyzing the options.
(A) कानपुर: Kanpur is a major industrial city but is not known as the "Manchester of India."
(B) लुधियाना: Ludhiana is an industrial city, primarily known for textiles, but not referred to as the "Manchester of India."
(C) अहमदाबाद: Correct — Ahmedabad is famously known as the "Manchester of India" due to its textile industry.
(D) इंदौर: Indore is a major city in Madhya Pradesh but is not associated with the textile industry like Ahmedabad.
Step 3: Conclusion.
The correct answer is (C) अहमदाबाद, as it is often called the "Manchester of India."