Answer:b. Through the Battle of Tours, Charles Martel was able to halt the Muslim advance.
Step-by-step explanation:
Charles Martel was the mayor of the Palace of Austrasia. He is best known for his victory in the Battle of Tours that took place in October 732 between the forces of Charles Martel and Islamic Umayyad Empire. In 732, he halted the Muslim invasion. For his accomplishment, he is regarded as the one who saved Europe from the domination of the Islamic invaders.