What evidence in the text most effectively supports the inference that Gerard overestimated his readiness for ocean swimming?

A. His false confidence left him, and terror seized him
B. He quickly let his boogie board go and tried to paddle for the shore
C. Gerard tagged along behind her, struggling to carry his boogie board in his small, six-year-old arms
D. With a panicked scream, Anna threw her shells to the ground and ran for the water

A. His false confidence left him, and terror seized him