__________ occurs when an authorized person opens a door, and other people, who may or may not be authorized, also enter.

________ data is automatically left-aligned by Excel

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

If such a resource is unavailable at the time a thread requests the resource, the thread will enter the________state until that resource becomes available to the thread.

a) running. b) waiting. c) blocked. d) None of the above.