At the wannsee conference in 1942, the nazis made plans for the invasion of poland. air raids on london. an attack on pearl harbor. the final solution.

The Nazis made plans for the invasion of Poland through the Final Solution at the Wannsee Conference.

The Wannsee Conference was a meeting held in the Berlin suburb of Wannsee on January 20, 1942.

The main purpose of the meeting at Wannsee Conference was to discuss "the Final Solution" to the Jewish Question.

Hence, the Nazis made plans for the invasion of Poland during the Wannsee Conference.

Therefore, the Option A is correct

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the Final Solution

Explanation:

At the Wannsee Conference in 1942, the Nazis made plans for the Final Solution.

The final solution in this context refers to Nazis' code name for the extermination of all the European Jews. The "final solution" was merely a way to hide the motives or the agenda of the Nazis.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.