Final answer:
In the first half of the 19th century, people began rejecting the religious notion of original sin and predestination due to the influence of the Second Great Awakening.
Step-by-step explanation:
In the first half of the 19th century, people did begin rejecting the religious notion of original sin and predestination.
During this time, the Second Great Awakening took place, which emphasized that salvation was available to all through free will. Religious reformers preached that individuals were responsible for seeking out their own salvation, rather than being predetermined by original sin or predestination.
Therefore, the correct option is True.