Final answer:
The best piece of evidence indicating that Jason is an experienced fisherman is his precise casting technique, knowing where the fish are likely to be. The correct answer is C) "When he figured his bait was just over the floating end of the log, he let it drop.
Step-by-step explanation:
The question asks which piece of evidence from the text best supports the idea that Jason is most likely an experienced fisherman. The correct answer is C) "When he figured his bait was just over the floating end of the log, he let it drop."
This demonstrates Jason's knowledge and skill in casting his line precisely where he believes a big trout is likely to be, indicating his experience with the behavior of fish and the technique required for successful fishing. Moreover, his selection of bait that matches the bugs on the water’s surface, and the careful approach to the casting site without startling the fish further portrays his expertise.