Correct Answer: Liability

Solution : The correct choice is the second option.

In the context of financial terms, assets contribute positively to one's financial standing, while liabilities represent potential drawbacks or obligations that can decrease overall wealth. Therefore, liability is the antonym that best contrasts with the positive connotation of assets in financial contexts.
The meanings of the other options are as follows:

• Mole : A burrowing mammal.
• Wealth : A synonym for assets.
• Refuge : A place of shelter or protection.

Therefore, the correct answer is liabilities.