Loneliness i think as solitary confinement is lonely.
What is the underlined sentence, so I can give you an accurate answer.
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
You didn't include the choices. But the conflict in fiction provides the basis for the story. It's man against nature, or man finding his place in the world or some such. Without conflict, fiction is nothing but a list of things characters are doing. Nobody wants to read that. No one even wants to write that.