Step 1: Understanding the question.
In India, cities are classified into various categories based on population. Class II cities are one such category. The minimum population required for a city to be classified as Class II is an important aspect in urban studies.
Step 2: Analyzing the options.
(A) 100000: This is incorrect as the minimum population for a Class II city is lower than 100000.
(B) 50000: This is incorrect because the minimum population required is not 50000.
(C) 20000: Correct — Class II cities in India are defined as those with a population of at least 20000.
(D) 10000: This is incorrect because a population of 10000 qualifies for Class III, not Class II.
Step 3: Conclusion.
The correct answer is (C) 20000, as the minimum population for a Class II city in India is 20000.