Answer:
D. Recounting his youth
Step-by-step explanation:
The first paragraph deals with mainly with the author bringing up how they found shark teeth when they were younger. That whole first paragraph is essentially the author retelling a story of finding the shark teeth. The second paragraph then transitions to the author explaining how they still look in the same spots for artifacts, in the present. Then furthers more into the present day of the author. Therefore, the most logical answer, in my opinion, would be D. By recounting his youth.
I hope this helps!!
- Kay :)