What impact did the Frankish leader Charles Martel have on the Christian Europe's relations with Muslim Spain in the eighth century?

Ahe negotiated a clear border between Spain & France.
Bhe stopped the Muslim advance from Spain into France.
Che welcomed ambassadors and scholars from Moorish Spain.
Dhe established a Christian kingdom in a corner of northern Spain.

Verified Answer :

B. He stopped the Muslim advance from Spain into France.

Charles, the son of Pepin of Herstal, was the "majordomo" (Mayor of the Palace) serving kings of the Merovingian dynasty. He received the nickname "Martel," meaning "The Hammer," for his leadership at the Battle of Tours in 732, defeating the forces of the Umayyad Caliphate.

It is B. he stopped muslim advance from spain and france