The answer is D
Just did the topic test review on edgenuity
Waren and Marshall hypothesis states that bismuth kills bacteria, thereby<span>healing gastritis and preventing ulcer relapse.</span>The Colloidal Bismuth Subcitrate (CBS) experiment provides evidence supporting Warren and Marshall's hypothesis because it showed that ulcer patients treated withbismuth had a substantially lower relapse rate than those treated with Tagamet.
The service sector accounts for the majority of jobs in the United States.
The first one is already, and the second one is allowed.
