What kind of harmony uses only notes from the key signature?

A. diminished
B. borrowed***
C. diatonic
D. dominant

In the key of D major, what chord is represented by the Roman numeral IV?

A. C minor
B. G major
C. F sharp minor
D. A major
I have no clue for the last one

please help quick

Unit 1 Lesson 11 In Harmony quick check

1. They are all major chords
2. diatonic
3. G major

i hope this helped for anyone who still needs it <3

I can confirm, "." is correct

For the first question, the kind of harmony that uses only notes from the key signature is called "diatonic" (option C). To determine this, we need to understand what each term means:

1. Diminished harmony involves using diminished chords, which consist of a root, a minor third, and a diminished fifth. This usually includes notes outside of the key signature.

2. Borrowed harmony, also known as modal mixture or modal interchange, refers to borrowing chords from parallel keys or modes. This involves using chords that are not strictly part of the current key signature.

3. Diatonic harmony uses only the notes found within a specific key signature. This means that all chords and melodies are built using the notes from the key without borrowing or adding any accidental notes.

4. Dominant harmony relates to the fifth scale degree of a key and is often associated with the dominant chord (built on the fifth degree of the scale). It does not necessarily limit itself to using only the notes from the key signature.

Therefore, the correct answer is C. Diatonic harmony.

For the second question, to determine the chord represented by the Roman numeral IV in the key of D major, we can use the Roman numeral system typically used in music theory to represent chords based on the scale degrees:

In the key of D major, the D major scale is as follows:
D - E - F# - G - A - B - C#

To identify the chord represented by the Roman numeral IV, we count up four scale degrees from the root note D, which gives us the note G. Therefore, the chord represented by the Roman numeral IV is G major.

So, the correct answer is B. G major.