Final answer:
In the sentence provided, 'The movie star' is a noun phrase serving as the subject, where 'movie star' is the noun giving information about who performed the action of riding at the front of the parade.
Step-by-step explanation:
In the sentence 'The movie star rode at the front of the parade.' the phrase 'The movie star' functions as a noun and is the subject of the sentence. A noun is a person, place, thing, or idea, and in this case, 'movie star' refers to a person who acts in films. Like in Example 1 and Example 2, subjects often consist of nouns or noun phrases that direct the action or state indicated by the verb, which in this case is 'rode.' The determiner 'The' and the noun 'movie star' work together to form a noun phrase that reveals who is leading the parade. Such a structure helps to provide clarity and detail within a sentence.