The first option to me makes the moat sense :)
Answer:
a.) emotional aspects with the artistic quality
Explanation:
They consisted of clay (to be exact hayclay or mud bricks), reeds, thick timber posts and stone for the walls(and foundation). As for the roof; tree trunks, reeds, clay and hay.
A unison interval occurs between two notes that are (D) identical in pitch. They can also be played at the same time with an identical length one octave apart, however not always necessary.
