The correct answer here would be fermata. This is a musical notation that is also known by numerous names such as a hold, a pause or my personal favorite the cyclops eye. This notation is used to indicate that a note should last longer than its normal duration. And that includes doubling its duration.
The correct answer for plato user is A
POP ART WAS A REACTION TO THE NONREPRESENTATIONAL NATURE OF ABSTRACT EXPRESSIONISM
The singular form of the word the "halves" would have to he the word "half"
Light (outdoor). Air (flying fins) Water (hanging white cage)