In March 1946 the British Cabinet sent a three-member mission to Delhi to examine the League’s demand and to suggest a suitable political framework for a free India. The Cabinet Mission toured the country for three months and recommended a loose three-tier confederation.  India was to remain united. It was to have a weak central government controlling only foreign affairs, defence and communications with the existing provincial assemblies being grouped into three sections while electing the constituent assembly: Section A for the Hindu-majority provinces, and Sections B and C for the Muslim-majority provinces of the north-west and the north-east (including Assam) respectively. The sections or groups of provinces would comprise various regional units. They would have the power to set up intermediate-level executives and legislatures of their own.

Assertion: In March 1946 the British Cabinet sent a three-member mission to Delhi.
Reason: The Cabinet Mission toured the country for three months and recommended a loose three-tier confederation.

Both the Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

In March 1946 the British Cabinet sent a three-member mission to Delhi to examine the League’s demand and to suggest a suitable political framework for a free India. The Cabinet Mission toured the country for three months and recommended a loose three-tier confederation. India was to remain united. It was to have a weak central government controlling only foreign affairs, defence and communications with the existing provincial assemblies being grouped into three sections while electing the constituent assembly: Section A for the Hindu-majority provinces, and Sections B and C for the Muslim-majority provinces of the north-west and the north-east (including Assam) respectively. The sections or groups of provinces would comprise various regional units. They would have the power to set up intermediate-level executives and legislatures of their own.