Hello there! The best option is the last one, They both brought opportunities to Georgia during World War II.
They were both Georgia senators is incorrect because Vinson was a Congressman.
They both served in the U.S. Army is incorrect because Vinson was in the navy.
And out of the last two options, the last one "They both brought opportunities to Georgia during World War II." would be correct, since they were both very important WW2 AREA. My dad knows a lot about ww2 so even after researching he helped me reach this conclusion. I hope this helps and have a great rest of your day!