A(n) ________ provides a visual cue about the value of a cell relative to other cells

_______________ is software that is downloaded, often without your knowledge, and whose purpose is to damage your computer files and steal your data.

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

_______ sites let users evaluate hotels, movies, games, books, and other products and services.

A) Social bookmarking B) Really Simple Syndication C) Captcha D) Social review