Select the head noun in this noun phrase: "three devils in disguise"

What is the trick in identifying a noun phrase?

Identify the noun phrase: " Horses prefer living in dark stables."

Select the head noun in this noun phrase: "deliberately raising your arm is illegal.

Select the one with a noun phrase: (A) Youth would be an ideal state if it came a little later in life. (B) Better to write for yourself and have no public, than to write for the public and have no self.

Identify the noun phrase: " Did you enjoy reading this book?

Select the one with a noun phrase in bold: (A) Democarcy is the name we give the people whenever we need them. (B) One machine can do teh work of fifty ordinary men. No machine can do teh work of one extraordinary man.

True or false? A noun phrase can function as a subject, an object, or a complement within a sentence.

Identify the noun phrase: " I tried to solve the puzzle."

Select the on with a noun phrase in bold: (A) When I was a boy I was told that anybody could become President. Now I'm beginning to believe it. (B) The thing that impress me the most about America is the way parents obey their children.

Identify the noun phrase: " I hope to win the first prize."

Select the one with a noun phrase in bold: (A) I am just going outside and may be some time. (B) In America any boy may become President, and I suppose it's just one of the risks that he takes.

Select the head noun in this noun phrase: "the heavy one in the middle."