What type of instruments fall under the brass category?

The correct choice identifies the instruments that belong to the brass family, which is characterized by their construction and the manner in which sound is produced. Brass instruments are typically made of metal and create sound through the vibration of the player's lips against a mouthpiece. The instruments listed—Trumpet, French horn, Trombone, and Tuba—are all designed to produce rich, resonant tones and are integral to various musical ensembles, including orchestras and brass bands.

Understanding the characteristics of brass instruments helps differentiate them from other families of instruments. For example, woodwinds, like the Flute, Clarinet, Oboe, and Bassoon, use reeds or the air itself to produce sound, while string instruments, such as the Violin, Cello, Viola, and Double Bass, produce sound through the vibration of strings, often using a bow. Similarly, the Piano, Harp, Guitar, and Mandolin fall under the category of chordophones, where sound is produced by vibrating strings that can be plucked or struck. Thus, the correct answer is representative of the unique qualities associated with brass instruments.