Step 1: Background.
India achieved independence on 15th August, 1947. At this time, Clement Attlee was the Prime Minister of Britain.
Step 2: Party in power.
Clement Attlee belonged to the Labour Party, which had come to power in 1945 after defeating Winston Churchill’s Conservative Party.
Step 3: Elimination.
- (A) Labour Party: Correct, Attlee’s government granted India independence.
- (B) Liberal Party: Incorrect, not in power during this period.
- (C) Republic Party: No such party in Britain.
- (D) Democratic Party: Exists in the USA, not in Britain.
Step 4: Conclusion.
Thus, the Labour Party was in power in Britain when India got independence.