Common classifications of _________ include viruses, worms, and trojans.

If you press Enter after typing in five underscore characters:

A) a page break is inserted. B) five more underscore characters will be inserted. C) the underscore characters will be converted to a hyphen. D) they are converted into a horizontal line.

If you are searching for information about a specific disease you can focus your search by using a subject-specific web site called a _________

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