Select the option that can be used as a one-word substitute for the given group of words.
A given space, time or position

* Slot: An allocated or designated place, time, or position in a schedule or sequence.
Shot: An act of firing a gun, throwing a ball, or an attempt.

Stuff: Matter, material, articles, or activities of a specified or indeterminate kind.

Stock: The goods or merchandise kept on the premises of a shop or warehouse.