Answer:
Option C i.e., ps ax > running-programs.txt.
Step-by-step explanation:
When the user wanted to store the output of that command that is 'ps as' then he have to write firstly that command use greater than operator after that filename with extension, in other words, ps ax is greater than running-program.txt that is name of the that.
So, the following option that is option c is correct according to the statement.