Final answer:
Châteauneuf-du-Pape is made from thirteen authorized grape varieties, led by Grenache and including Syrah, Mourvèdre, and others, which contribute to the diversity of this renowned full-bodied red wine from the Rhône Valley.
Step-by-step explanation:
The thirteen authorized grape varieties used to make Châteauneuf-du-Pape are A) Grenache, Syrah, Mourvèdre, Cinsault, Clairette, Roussanne, Bourboulenc, and Picpoul. These grapes are grown in the Châteauneuf-du-Pape AOC (Appellation d'Origine Contrôlée) region in the Rhône Valley, France.
The blend of varieties is dominated by Grenache, but winemakers may include any mixture of the authorized grapes. This wide choice allows for a significant diversity in styles within the Châteauneuf-du-Pape appellation, which is known for its full-bodied red wines.