Select the most appropriate meaning  of the given idiom.

Easy money

Make money without much effort, maybe illegally

The most appropriate meaning of the given idiom "easy money" is (4) Make money without much effort, maybe illegally.

The idiom "easy money" refers to money that is obtained without much effort or risk. It is often used to describe money that is made through illegal or unethical means, such as gambling, fraud, or drug dealing.

The other options do not fit the meaning of the idiom.

• Collect someone's cash for them easily means to take someone's money without their permission.
• Work hard to earn a large salary without telling anyone means to work hard and earn a lot of money, but to keep it a secret from others.
• Have no difficult in collecting money that is due means to be able to collect money that is owed to you without any problems.