The sentence where the commas are used correctly in is Sentence D :)
<span> in 1941, at around 1:30 p.m., </span>President<span> Franklin </span>Roosevelt<span> is conferring with advisor Harry Hopkins in his study when Navy Secretary Frank Knox bursts in and announces that Japan had attacked </span>Pearl Harbor<span>. The attack killed more than 2,400 naval and military personnel.</span>
I believe the answer is a, connect ^^