Step 1: The Movement for Democracy
The movement to restore democracy in Nepal, particularly the 2006 popular uprising known as the "People's Movement" or Jana Andolan II, was led by the Seven Party Alliance (SPA). This alliance consisted of major democratic political parties in Nepal, including the Nepali Congress, the Communist Party of Nepal (Unified Marxist-Leninist), and other smaller factions.
Step 2: Non-Violent Nature
The movement was non-violent and was primarily focused on protesting against the royal autocratic rule, demanding the restoration of democracy and constitutional rights.
Step 3: Final Answer
Thus, the non-violent movement to restore democracy in Nepal was led by the Seven Party Alliance. The correct answer is (D) Seven Party Alliance.