The Collection class or interface that allows only unique elements is the ___________ class or interface.

A ________ is a preformatted document structure that defines the basic document settings, such as font, margins, and available styles

A) Quick Style B) data source C) template D) main document

Referring to the accompanying figure, the marquee around one of the cells can be removed by clicking the _____ key.

A. F1 B. Enter C. Esc D. Alt