It is known as "Thematic Development".
ITS C)CROMLECH
Explanation:
if im right pls mark me as brainliest
Answer:
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¡Espero que esto ayude!
1) plagal
2) this can be debated everywhere because it depends on what "makes sense" I think it is a phrase but it could just as easily be a measure. a period would be too long and a cadence, while making sense, is a cadence, it ends a phrase. The answer the answer key is looking for will probs be a phrase.
3) phrases, period (answer D)
4) A: Authentic
hope his helps! good luck with the rest of Music Theory!