The answer would be a because many of the gold diggers actually didn't find gold. hope this helped :3
It is important to know the author's purpose because knowing the author's purpose can change how the story is being told. If someone said,"Mom, I would really like this new video game for my birthday." and the author's purpose was to inform, it would be informing the mom that the person wanted the video game. If the author's purpose was to persuade, that person would be persuading the mom to get him the video game.
Bonjour - France
Hola - Spain
Hello - England
Gluten Tag - German
Namaste - India Hind
Zdras-Tvuy-Te - Russia
Konnichiwa - Japan
Merhaba - Turkey
Nihau - China