The answer would be a statistic, considering that it was a recent study, therefore it was proven by someone else.
the answer would be
We often came to these spots to look for artifacts.
Our beach, our summer home, had been a fishing camp for as long as anyone living could remember
<span>✡ Answer: His </span><span>✡
- - Why?
This is because you need to fill in the blank with a word that makes this sentence understandable and complete.
In this case, I used a pronoun.
I'm not sure about "his" acting in the play next week.
</span>✡Hope this helps!<span>✡</span>