C) key- (n) a small island.
Get rid of the obvious ones:
- Important
- pitch or tone
"We looked across the bay and saw the tropical key in the distance"
What they are looking at is an object and these are not.
Since this is an object it can be "to type or enter" since that is a verb.
_____
They also address this location as sandy and lots of vegetation (plants)
which islands have.
Hope this helps!
-Payshence