Final answer:
Ann Foster's testimony changed from denial to confession due to coercive interrogation during the Salem Witch Trials, highlighting the impact of societal pressure.
Step-by-step explanation:
In the Confession of Ann Foster, Ann's testimony changes due to the extreme pressure and coercive interrogation methods used during the Salem Witch Trials. Initially, she denied involvement in witchcraft but later, possibly after experiencing intimidation and the fear of harsh punishment, she confessed to being a witch and implicated others as well. This shift demonstrates the power of societal and judicial pressures in shaping individuals' testimonies during times of hysteria.