_________are used to document a program and improve its readability.

A(n) ______ is a user who posts negative, inflammatory comments on a blog post or article with the intent of inciting other users.

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

____ hard drives are permanently located inside the system unit and are not designed to be removed, unless there is a problem with them.

A. Static B. Internal C. External D. Network