I believe it is C as well. Based off of the process of elimination and it sounds right, what passage is it from?
The controlling idea of Chapter 5 of The Dark Game is that the Berlin tunnel was an ambitious and valuable project carried out by the US and Britain to gather intelligence about the Soviets.
Answer:
invasions
Explanation:
"A mix of their languages produced a language called Anglo-Saxon, or Old English. It sounded very much like German. ... Over time, the different languages combined to result in what English experts call Middle English. While Middle English still sounds similar to German, it also begins to sound like Modern English"