Why was hall concerned that the germans would learn about the british reading their secret messages? the germans would begin reading british secret messages to get revenge. reading an enemy’s secret messages is against the codes of war. the germans would then find a different way of transmitting their messages. this knowledge would make the americans sympathize with the germans.

The Germans would then find a different way of transmitting their messages.

The correct answer is C. The Germans would then find a different way of transmitting their messages.

Explanation:

Hall was trying to find the way to share the information he had obtained from Zimmermann's telegram with president Wilson, but he was afraid that if the Germans discovered their communications were being spied, they would find a new way or codification to prevent the allies from intercepting their messages.