Answer:
The textual evidence that best supports the inference that the Germans could not lay new cables in the waters of the English Channel is "The Germans now had to rely on radio transmissions from their powerful wireless station at Nauen, a few miles from Berlin."
Step-by-step explanation:
a) Textual evidence is evidence found in the form of a quotation, paraphrased material, and descriptions of the text that supports an argument or thesis. Textual evidence support the thesis or main point.
b) An inference is a conclusion that is arrived at based on reasoning and evidence.