Final Answer:
The triad composed of two stacked minor thirds is known as a diminished triad. Thus, the correct answer is 3) Diminished.
Step-by-step explanation:
A diminished triad is formed by stacking two minor thirds on top of each other. A minor third consists of three half steps, and when you combine two minor thirds, they span six half steps or one diminished fifth interval. This unique combination creates the diminished triad, characterized by its tense and dissonant sound.
In music theory, a minor third interval encompasses three diatonic scale degrees, while two minor thirds together create a diminished triad chord, typically denoted by a root, a minor third above the root, and a diminished fifth above the root. This chord structure contributes to its distinct quality, often associated with suspense or instability due to the dissonance generated by the interval arrangement.
The diminished triad's specific configuration makes it valuable in various musical contexts. It is frequently used in compositions to create tension or to lead to a resolution, adding color and complexity to harmonic progressions. Its dissonant nature lends itself to unique and intriguing harmonic possibilities, contributing to the richness of musical compositions across different genres.
Understanding the diminished triad and its intervallic arrangement is crucial for musicians and composers as it offers a diverse range of harmonic possibilities, enriching musical compositions and contributing to the emotional depth and complexity of musical pieces.
Thus, the correct answer is 3) Diminished.