Answer:
A). Problem and Solution
C). Chronological
Step-by-step explanation:
The text structures that have been employed in the given excerpt are 'problem and solution' and the 'chronological text structure.' It is arranged in the 'problem and solution structure' because it first states an issue that is of concern('Cable messages progressing into English waterway from Europe to the U.S. leading' here) and then, propose a likely solution for its resolution 'cutting of the 5 cables that took communication messages' and allowed the others to remain intact in order to access the messages that were being sent from Berlin to the U.S." The other text structure used is 'Chronological' as the events are mentioned one after another that offers a sequential and logical understanding to the readers. Hence, options A and C are the correct answers.