Question

Which piece of textual evidence best supports the inference that the British had better code breakers than the Russians did?

The Russian admiralty decided that their British allies could make better use of the codebook than they could, so it was sent to London.
The codebook was a bonanza for the British code breakers.
Not only did it contain the columns of code "words"—groups of randomly selected numbers—on which the messages were based
[B]ut it also included a changeable key to the cipher systems used to obscure the coded messages

Answer 1

A) The Russian admiralty decided that their British allies could make better use of the codebook than they could, so it was sent to London.

Step-by-step explanation:

The Russian admiralty dispatched the codebook to London since it would be more valuable there, according to these statements. We can only assume that the codebook was used more in London because the city had better people who could break codes, since that was the book's stated goal.