Answer:
The Germans now had to rely on radio transmissions from their powerful wireless station from Nauen, a few miles from Berlin.
Step-by-step explanation:
The above is a piece of textual evidence which best supports the inference that the Germans could not lay new cables in the waters of the English Channel.
The above excerpt is culled from "The Dark Game", a non-fiction story written by Paul Janeczko. The story reveals some powerful personalities, challenging missions, technological advancements that are changing the rules of gathering intelligence. Jancezko uncovers the story of spies in U.S history.