You can use a ________ as a symbol to substitute for unknown characters in criteria

A self-contained instruction that can be combined with other actions to automate tasks is called a(n):

A) command. B) action. C) argument. D) condition.

USB flash drives plug into a computer's ____________________, a rectangle socket positioned on the front, side, or back of the system unit.

Fill in the blank(s) with the appropriate word(s).