Here's why:
* Simple Subject: The main noun or pronoun that performs the action of the verb.
* Noun: A word that names a person, place, thing, or idea.
Example:
* The dog barked loudly.
* "Dog" is the simple subject because it is the noun performing the action of barking.
Let's break down the other parts of speech:
* Verb: A word that shows action or a state of being (e.g., barked, is, seems).
* Adjective: A word that describes a noun (e.g., loudly).
* Adverb: A word that describes a verb, adjective, or another adverb (e.g., loudly).
* Preposition: A word that shows the relationship between a noun or pronoun and another word in the sentence (e.g., on, in, under).