During the Second World War, which of the following pairs were Allied nations fighting against the Axis powers?

Introduction / Context:
The Second World War was fought between two major military coalitions: the Allies and the Axis powers. Knowing which countries belonged to which side is a basic requirement in world history. This question focuses on identifying a correct pair of Allied nations, which is a common type of multiple choice item in exams.

Given Data / Assumptions:
- The question asks which pair were Allied nations during World War II.
- Options list different country pairs including the Soviet Union and Britain, China and Pakistan, Pakistan and India and a none of the above choice.
- We assume awareness that the main Allied powers included the United States, Britain, the Soviet Union and China, among others.
- We also note that Pakistan did not exist as an independent state during World War II.

Concept / Approach:
The United Kingdom and the Soviet Union were both major members of the Allied camp. Britain was involved from 1939, and the Soviet Union joined the Allies after Germany invaded in 1941. China also fought against Japan as part of the Allied side, but Pakistan as a separate country came into existence only in 1947, after the war. Therefore, the only fully correct pair listed is the combination of the Soviet Union and Britain.

Step-by-Step Solution:
Step 1: Recall the list of principal Allied nations: Britain, the Soviet Union, the United States, China and others.Step 2: Examine option A, which pairs the Soviet Union with Britain, both clearly Allied countries during the conflict.Step 3: Consider option B, China and Pakistan; China was an Allied nation, but Pakistan did not yet exist as an independent state during the war.Step 4: Consider option C, Pakistan and India; again, Pakistan did not exist in World War II, and the region was still part of British India.Step 5: Recognise that because a valid Allied pair appears in option A, the none of the above option must be incorrect.Step 6: Select option A as the correct answer.

Verification / Alternative check:
To verify, think of well known images and events. British forces fought in Europe, North Africa and Asia, while the Soviet Union battled Germany on the Eastern Front. Both countries attended Allied conferences with leaders such as Franklin Roosevelt and Winston Churchill. There is no reference in standard histories to Pakistan as an independent wartime ally because it did not yet exist. This confirms that the Soviet Union and Britain formed a genuine Allied pair.

Why Other Options Are Wrong:
Option B is partly correct about China but incorrect about Pakistan, which was part of British India during World War II. Option C is wrong because Pakistan had not been created and India at that time was still under British rule, represented internationally by Britain. Option D, none of the above, is incorrect because option A already gives a valid Allied pair.

Common Pitfalls:
Students sometimes overlook the fact that Pakistan was formed only after the war, leading them to treat it as if it existed earlier. Another pitfall is to forget that India was a colony and thus not an independent actor in the international system during that period. Keeping a simple mental timeline of country formation helps avoid these mistakes.

Final Answer:
During World War II, the pair of Allied nations listed here is the Soviet Union and Britain.