Answer :
It’s B. Your answer is B, because she is taking 15 away from her money she said already
Of course it's B
B. m-15
m represents her amount of money she has altogether.she spent $15. This shows she spent $15 from her total money. So subtract her total amount of money with the amount of money she spent.
m-15
This expression will show how much money she has left with her.
may this helps you
bye.