The correct answer to complete the sentence is:
A. murió
Here's why:
1. "Francisco Goya" is a singular subject, so the verb should agree with it in singular form.
2. The verb "murió" is in the third person singular form, which matches the subject "Francisco Goya" correctly.
3. The other options ("murieron," "moriste," and "morí") do not match the subject in number or form.