It’s C Theirs because if you use the others It doesn’t make sense only theirs does
<u>1. Format of Notice writing :</u>
- Name of the Institution/Organisation
- Need to write the word "NOTICE" with capital words
- Main content with the necessary details including Date, Venue, Time, etc
- Name of the person who had written the notice
You did not include the other part of the question but with some googling i think this answer is what you were looking for:
"to the grocery store" modifies drive. Because drive is a verb, that makes "to the grocery store" an adverb phrase.
