The Cabinet Mission Plan for India envisaged a

The correct answer is Option 4: Union of States.

The Cabinet Mission Plan (1946) proposed a three-tier structure to maintain India's unity while addressing the Muslim League's demand for autonomy. It specifically recommended a Union of States (Union of India) that would encompass both British India and the Princely States.

Key reasons why Option 4 is correct:

• Limited Central Authority: The Union was empowered to deal only with three subjects: Foreign Affairs, Defence, and Communications.
• Residuary Powers: Unlike a standard Federation, all subjects other than the Union subjects and all residuary powers vested in the Provinces.
• Grouping: It proposed the grouping of provincial assemblies into three sections (A, B, and C) to allow for regional autonomy.

Why other options are incorrect: The Plan rejected a Federation with a strong center (Option 1) to appease the League, and it was more integrated than a loose Confederation (Option 2). A Unitary system (Option 3) was ruled out due to India's diverse political landscape and the demand for provincial sovereignty.