Question

Which excerpt from "The Enigma Machine” supports the idea that Allied forces expected the Germans to complicate their coding system?

The Enigma machine was invented at the end of World War I by German engineer Arthur Scherbius. He used rotors and an electrical pathway in his design.
The telegram was intercepted and deciphered by British intelligence, and it caused such outrage in the US that it helped generate public support for the United States’ entry into the war.
After 1938, when the Germans introduced additional rotors and plugs to increase the number of possible combinations, Polish and British cryptologists had already developed alternative methods of recovering the daily keys.
The two main weaknesses of the Enigma machine were careless operators and the distribution of the daily key. The daily key was printed on paper, and it had the potential of being captured en route to the field.

Answer 1

Person above me was right, its C

Step-by-step explanation:

Answer 2

The excerpt that supports the idea that Allied forces expected the Germans to complicate their coding system is:

C. After 1938, when the Germans introduced additional rotors and plugs to increase the number of possible combinations, Polish and British cryptologists had already developed alternative methods of recovering the daily keys.

Step-by-step explanation:

According to excerpt C, the Allies were already one step ahead. Because they already expected Germans to complicate their coding system, British and Polish cryptologists found different ways to recover the daily keys. And they were right. Germans eventually did begin to use new rotors and plugs with the purpose of creating more combinations. However, when that happened, cryptologists had already figured out their alternative methods.