It means "What beverage is the most expensive?"
This means "what is your favorite drink?".
"What is your favorite drink?" in English is Quelle est votre boisson préférée? in French.
quelle est ta boisson chaude préférée ? -
quelle heure est-il ? However nowadays we prefer to say 'have you got the time?' in French too rather than quelle heure est-il: Vous avez l'heure? Tu as l'heure? are more commun.
C'est Toronto
Quelle est ton nationalite means 'What is your nationality'
"quelle couleur est-ce ?"de quelle couleur est cet objet ? : what colour is that object?
Il est quelle huere? (What time is it)
What is the date? is the translation for Quelle est la date.
La population de Lisbonne est plus ou moins 500 000 hab.
'mais quelle est cette ...' means but what is this (thing) / who is this (person).
Quelle est ta leçon préférée? means - what (or which) is your favourite lesson?