Step 1: Statement (A)
British India did not possess a singular, contiguous belt of Muslim-majority areas. Muslims resided in diverse regions, lacking geographical continuity. This statement is accurate.
Step 2: Statement (B)
Khan Abdul Gaffar Khan of the North Eastern Frontier Province opposed the two-nation theory. He advocated for a united India and strongly resisted partition. This statement is accurate.
Step 3: Statement (C)
Regions within Bengal and Punjab had non-Muslim majorities, and the partition resulted in new borders that divided communities. This statement is accurate.
Step 4: Statement (D)
Partition-related violence impacted minorities on both sides of the newly established borders. Hindus and Sikhs faced persecution in Pakistan, while Muslims experienced similar targeting in India. This statement is accurate.
Step 5: Final Answer
Statements (A), (C), and (D) are correct. Consequently, the correct choice is Option 4.