We can infer that the information in the wireless message was extraordinarily important because of the fact that Montgomery and Gred hurried to fetch Admiral Hall in order to deliver the message (An indication that they had deciphered it), and from the line that goes "as he tries to assess the impact of he was reading" which is also a sign of the significance of the message.
<span>A) </span>The evening air was pale and chilly and after every charge and thud of the footballers the greasy leather orb flew like a heavy bird through the grey light. I Hope I helped
