Which two characters do you use to tell the command that you are finished providing options and that the remaining data on the command line is arguments

Two hyphen-minus characters (- -)

Explanation:

Using two hyphen-minus characters only, tend to recommend that the rest of the data are arguments and should not be treated as alternatives.

Hence, in this situation, the two characters a user will use to tell the command that a user is complete giving options and that the rest of the data on the command line is arguments is known as "two hyphen-minus characters (- -)"

the answer is gallery.