1. The Khilji dynasty, founded by Jalal-ud-din Firoz Khalji, ruled large parts of the Indian subcontinent between 1290 and 1320.

2. The use of slaves by the Delhi Sultans was criticized by the elites in the state.

3. Unity in the vast empire of the Sultanate depended on trusted administrators and governors.

(B) future - The sentence suggests a hopeful outlook, and "future" is the most appropriate word to indicate a time when things are expected to return to normal.

(B) cleave to - The phrase "tongue seemed to cleave to the roof of his mouth" conveys the idea of sticking or adhering.

(C) purely - The phrase "purely incidental" suggests that any resemblance is entirely accidental, making "purely" the most appropriate choice.

(C) break - The collocation is "break the ice," meaning to initiate a conversation in a social setting.

(A) dominating - The phrase "outstanding and dominating figures" implies that Tagore and Gandhi were influential and had a significant impact.

(B) Immigrant - The sentence describes someone settling in a different country, making "Immigrant" the most appropriate one-word substitute for the underlined group of words.

(D) death - The phrase "risk, uncertainty, and fear of death" completes the sentence appropriately, highlighting a common source of anxiety.