First, try waiting a good few minutes in case the computer is just taking a long time to load data. walk away, get a snack, and then come back. if it’s still frozen, see if any of the programs will let you close them. if not, try doing a “force quit,” which on a pc is a combination of keystrokes: control, alt, delete. that should allow you to close programs and start all over. if none of these tricks works, then turn your computer completely off, wait a few minutes, and turn it back on. in 90% of cases, this resets the computer and “fixes” the problem. what would be the best introductory sentence to add to this paragraph? a. if your computer freezes on you, don't panic—there are many things you can do to get it going again. b. make sure you save your work often, just in case the computer freezes or crashes and you lose your work. c. there are computer classes available on just about every aspect of technology at most community colleges. d. banging on the keys is probably not a good idea, as it will do nothing to unfreeze a frozen computer.