Please help me understand this.

What is the quality of the triad if the interval between the root and third is m3 and the interval between the third and fifth is M3?
A. major
B. minor
C. augmented
D. diminished***

Which term is the name for the lowest note in a triad?
A. root***
B. third
C. fifth
D. seventh

A tonic note is which degree of a scale?
A. the first degree***
B. the first accidental
C. the mid-range note
D. the second flat

There are two half-steps between E flat and F. What type of interval is it?
A. major second
B. minor second
C. perfect fifth***
D. perfect third

In a major scale, fourths, fifths, and octaves are defined by what term?
A. major second
B. minor second
C. perfect interval***
D. accidental interval