Choisissez l'option justeOn joue au volleyball à l'/au.

In French, the preposition used before a noun can indicate the location or place where the activity is performed. The article that follows the preposition agrees with the gender and number of the noun it precedes.

The phrases in the question involve locations where volleyball is played. Let's analyze each location:

• **église:** In French, 'église' (church) is feminine, and you would use the preposition "à la". Usually, volleyball is not played in or at a church.
• **école:** In French, 'école' (school) is feminine, so you would use "à l'". Volleyball can be played at schools, but it's not as common as a gym or field.
• **cinéma:** In French, 'cinéma' (cinema) is masculine, and usually, you would use "au". However, volleyball is not played at a cinema.
• **stade:** In French, 'stade' (stadium) is masculine, and you use the contraction "au" which is short for "à le". **Stadiums are common places where sports, including volleyball, are played.**

Therefore, the correct option to indicate a place where volleyball is commonly played is **"au stade."**