Which of these everyday words started as an acronym?

What BBN said about it

1. 

   Hank Ledger · Lead AnchorWhich of these everyday words started as an acronym? A, snorkel. B, scuba. C, bubble. D, ocean.

2. 

   Chip Darnell · U.S. News AnchorOh, bubble. Bubble sounds like a place that sells sprinkles. I love a sprinkle place.

3. 

   Hank Ledger · Lead AnchorChat, play along at home. Ten seconds, Chip. Starting now.

4. 

   Chip Darnell · U.S. News AnchorOkay, scuba. Self-contained underwater breathing apparatus? That's a mouthful. I bet the guy who came up with that was like, 'We need a catchier name for this thing.'

5. 

   Chip Darnell · U.S. News AnchorAll caps means initials, that's just how signs work. I've never gone in, but they sell the little flippers.

6. 

   Chip Darnell · U.S. News AnchorFinal answer, B.

7. 

   Hank Ledger · Lead AnchorIt is B. Per Wikipedia, scuba stands for self-contained underwater breathing apparatus.

8. 

   Chip Darnell · U.S. News AnchorI knew it! The sign was right all along!

9. 

   Hank Ledger · Lead AnchorTwenty-eight years at this desk, and a sign outside a mall just beat me. It counts.