Which sentence does not contain any errors in period usage?

A.
I've lived in Boston, M.A., for about a decade.

B.
The F.A.A. released new guidelines for airline certification.

C.
We're allowed to watch TV. for 30 minutes tonight.

D.
This morning we ran 15 km to prepare for the race.

Respuesta :

The sentence that does not contain any errors in period usage is option D. This morning we ran 15 km to prepare for the race. In choices A and B, there are words that are represented by initial letters. These kind of abbreviations do not need periods every after the letter.