Concept:India's emergence as a nation was a gradual process driven by the growth of political consciousness and associations over many decades.
Explanation:After 1850, political associations clearly stated that British control was draining India's resources, showing rising awareness.
These associations also promoted the idea that the people should be sovereign and self-governing.
The Ilbert Bill controversy (1883) deepened the demand for an all-India organisation of educated Indians, eventually leading to the Indian National Congress.
Options (a), (b), and (d) directly support this long-drawn process of nation-building.
Option (c) is incorrect because it describes only regional, localized efforts, not the national consciousness the assertion refers to.
Answer:D. (a), (b) and (d) only