Final answer:
The exact number of charges at the Battle of Hastings before William changed his strategy is not detailed in historical records, and the Bayeux Tapestry emphasizes the importance of cavalry in Norman tactics.
Step-by-step explanation:
The Battle of Hastings underwent several charges before William the Conqueror changed his strategy. However, the historical record does not provide an exact number of charges prior to his adaptation in battle tactics. The reference to the Bayeux Tapestry indicates that William's cavalry played a significant role in the battle. They had the ability to swiftly advance and retreat, which was used to disrupt the enemy's defenses and allow the infantry to press the attack. This tactical flexibility and the intimidating force of the cavalry were key elements depicted in the tapestry, emphasizing the Normans as a cavalry-dominant army. Due to the lack of specific historical details on the number of charges, the multiple-choice question cannot be accurately answered based on the provided information.