In the following question, you have a brief passage with 5 question. Read the passage carefully and choose the best answer to each question out of the four alternatives.

Culture is defined as a people’s way of life. It entails how they dress, how they speak, the type of food they eat, the manner in which they worship, and their art among many other things. Indian culture, therefore, is the Indians’ way of life. Because of the population diversity, there is immense variety in Indian culture. The Indian culture is a blend of various cultures belonging to diverse religions, castes; regions follow their own tradition and culture. Indian Culture is one of the oldest cultures in the world. India had an urban civilization even during the Bronze age. The Indus Valley Civilization (Harappan Civilization) dates back to 3300 BC – 1300 BC. Distinct cultures different from each other co-exist together in a single country. Thus, in India, there is unity amidst vast cultural diversity. The way people live in India is reflected in its culture. India is a land of unity in diversity where people of different sects, caste and religion live together. India is also called the land of unity in diversity as different groups of people co-operate with each other to live in a single society. Unity in diversity has also become the strength of India.

What is the reason behind immense variety in Indian culture?