Which of the following describes a major chord?

A major chord is defined by a specific structure of intervals between its notes. It consists of a root note, a major third, and a perfect fifth. The major third is the interval between the root note and the third note in the chord, and this interval spans four half steps. Following this, there is a minor third between the third note and the fifth note, which consists of three half steps.

In the correct answer, the major third and minor third together create the distinctive sound that characterizes a major chord, resulting in a combination that harmonizes well and conveys a bright, uplifting quality. This combination distinguishes it clearly from other chord types, like minor chords or diminished chords, which would utilize different intervals. Understanding these intervallic relationships is crucial for identifying and constructing major chords in both theoretical and practical musical contexts.