Answer: This is the answer dominant seventh
A dominant seventh chord consists of the dominant triad (fifth note of the scale is the root of the dominant chord) and an added note a minor seventh above the root. For example, the dominant seventh chord in C major (or minor) is G-B-D-F.
Explanation: There are five qualities of seventh chords that appear in diatonic music: major seventh, dominant seventh, minor seventh, diminished seventh (also called fully-diminished), and half-diminished