Answer:
Ok so im not completely sure about this but i think its
<em>Systems Software</em>
Explanation:
because word processor is for typing documents and stuff
spreadsheet is for like tracking you money your daily money or something
or some kind of graph for stuff like that (i think)
applications software well your keyboard isn't a application unless its the on screen keyboard
so the only one left is <u><em>system software</em></u>
<u><em></em></u>
hope it helped :)))) (●'◡'●)