Final answer:
The Grenache grape is used to make the sweet fortified wine Maury from France, where the winemaking process includes the addition of grape spirit to maintain sweetness and increase alcohol content.
Step-by-step explanation:
The grape variety used to make the sweet fortified wine known as Maury from France is Grenache. This grape is prominent in the region of Roussillon where Maury is produced, and it lends itself well to the production of both sweet and fortified wines.
The process of fortification involves adding a grape spirit to halt fermentation, thus retaining the natural sweetness of the grapes while increasing the alcohol content.
The grape that is used to make sweet fortified wine named Maury from France is Grenache.