Answer:
B. Underline the simple sentences in each compound sentence below.
1. [tex]\tt\underline\bold{{The\:mayor\:ordered\:the\:people\:to}}[/tex][tex]\tt\underline\bold{{evacuate}}[/tex] but they did not listen.
∆ A simple sentence has one complete thought which is, has only one subject-verb connection.
∆ A compound sentence is a sentence which is has more than one subject or predicate. Also, we can use the FANBOYS. Fanboys means;
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[tex]{\boxed{\boxed{\sf\pink{Hope\:it\:helps!<3}}}}[/tex]