Why is it important to fully understand the instructions for using an individual search engine, web directory, database, or other computer-based research tool?

a. You can be fi ned if you use these tools improperly.

b. Most search tools don’t return any results if you don’t know how to use them.

c. Using the tool without understanding how it works can produce unpredictable and misleading results.

d. Today’s search tools are so easy to use that you don’t need to worry about learning the details.