What language is more similar to French? Spanish, or Italian?
When it comes to pronunciation, and words they share. Which of the two is more closely related to French?

Question

Answer

From my experience, I can say:
- French and Italian might be very similar in grammar 
- French and Spanish might be similar in some vocabulary (but also Italian and English)
- French and Portuguese might be similar in pronunciation

It's true that Italian native speakers (or advanced Italian speakers) learn quickly French, but Italians rarely reach a soft pronunciation.

Answer

Of the three the two that are closest are Spanish and Italian, that doesn't really answer your question but it is true.