Explanation:

The **Ilbert Bill** was a controversial legislative measure introduced in 1883 during the viceroyalty of **Lord Ripon** (1880-1884). The bill aimed to remove judicial disqualifications based on race, allowing Indian judges and magistrates to preside over cases involving European British subjects in the mofussil (countryside). This proposal sparked immense outrage and opposition from the European community in India, who viewed it as an attack on their racial privilege. The controversy, known as the 'Ilbert Bill agitation', highlighted the racial tensions and discriminatory practices prevalent in British India. Option A is correct. Thomas Macaulay (Option B) was a legal expert and historian who played a key role in introducing English education in India in the 1830s, long before the Ilbert Bill. James Dalhousie (Option C) served as Governor-General from 1848 to 1856, known for his Doctrine of Lapse and administrative reforms. Freeman Willingdon (Option D) was Viceroy of India much later, from 1931 to 1936, a period that saw the Second Round Table Conference and the Government of India Act 1935.