Select the most appropriate word to fill in the blank.

The reckless young man was ______ for the debts incurred by him.

liable

The most appropriate word to fill in the blank is liable.

The word "liable" means legally responsible for something. It is the most appropriate word to use in this context, as it conveys the meaning of the reckless young man being legally responsible for the debts that he incurred.

The other options are not as appropriate.

• Audacious means bold or daring. This is not the right word to use, as it does not make sense to say that the reckless young man was audacious for the debts incurred by him.
• Reliable means able to be trusted or depended on. This is not the right word to use, as it does not make sense to say that the reckless young man was reliable for the debts incurred by him.
• Suspicious means feeling or showing doubt or distrust. This is not the right word to use, as it does not make sense to say that the reckless young man was suspicious for the debts incurred by him.