Final answer:
The passage implies that Luis's father has an obsessive tendency to polish objects, akin to King Midas's actions with gold, indicating a compulsive behavioral pattern. The correct answer is option: Luis thinks this means his father has an obsession.
Step-by-step explanation:
The passage "His father polished everything that could be polished: doorknobs, coins, keys, spoons, knives, and forks, like he was King Midas counting his silver and gold," suggests that Luis's father has an obsession with cleaning and polishing household items.
The comparison to King Midas, who in mythology turns everything he touches to gold, indicates an excessive and possibly compulsive behavior towards making objects shine like precious metals. This does not necessarily imply greed, loneliness, happiness, or worry, but rather an overpowering drive to polish these items, which is reminiscent of an obsessive action.