Final answer:
Guillaume Du Fay was born in 1397, making option A the correct answer. He was a significant composer during the early Renaissance, known for his contributions to both sacred and secular music.
Step-by-step explanation:
The correct answer to the question of when Guillaume Du Fay was born is A. 1397. Guillaume Du Fay, also known as Guillaume Dufay, was a prominent composer of the early Renaissance period. His contributions to the transition from medieval to Renaissance music were significant, and his compositions spanned both sacred and secular genres. A renowned European figure of his time, Du Fay's works demonstrated innovative use of melody, harmony, and rhythm. He has been celebrated for his mastery of the musical forms of his era, including the mass, motet, and chanson.