____ is the feature of programs and methods that assures you each has been tested and proven to function correctly.

The VLOOKUP function

A) is the argument in a function that describes to which column to return a value. B) looks up a value and returns a related result from the lookup table. C) is a range containing a lookup table. D) is a reference to a cell containing a value to look up.

The Windows 8 ________ is the main interface to launch programs

A) Start button B) Start screen C) Charms bar D) desktop