C: Turner’s thoughts about high tide the following day.
Explanation:
Turner's excitement about seeing Lizzie could significantly be established for the excerpt from his reported thought about high tide the following day. During their conversation, Lizzie promised to see Turner the following day at high tide. This promise could have made Turner's day as Lizzie promised him to come see him at high tide. Hence, The remembrance of the time when they'll be meeting is a proof of excitement
