Which term represents a lively and fast tempo?

The term that represents a lively and fast tempo is "Allegro." In music, tempo indicates the speed at which a piece is played, and "Allegro" specifically refers to a brisk and cheerful tempo, generally ranging from about 120 to 168 beats per minute. This lively pace can evoke feelings of excitement and energy in the music, which makes it a popular choice for many compositions.

Other terms such as "Presto," while also indicating a fast tempo, typically suggest an even quicker pace than "Allegro." "Moderato" refers to a moderate tempo, slower than "Allegro," and "Poco" means "a little," which does not directly define a tempo but rather implies a slight change or adjustment to a preceding tempo or dynamic indication. Therefore, "Allegro" is the most accurate term for a lively and fast tempo among the given options.