Which of the following is the correct definition of...

A phrase that combines a verb with a preposition or adverb or both and that functions as a verb whose meaning is different from the combined meanings of the individual words.

A small group of words standing together as a conceptual unit, typically forming a component of a clause.

A unit of grammatical organization next below the sentence in rank and in traditional grammar said to consist of a subject and predicate.

A word or group of words that functions in a sentence as subject, object, or prepositional object.