What is the meaning of the idiom "A man of straw"?

A man of no substance

The correct answer is A man of no substance.

The other options are:

• A man with no means : This is not the meaning of the idiom "a man of straw."
• A generous man : This is not the meaning of the idiom "a man of straw."
• A man of character : This is not the meaning of the idiom "a man of straw."