This is a simple sentence:
Your favorite meal (subject) is (predicate) breakfast (object).
It contains a single independent clause, unlike a compound sentence that contains two or more independent clauses joined by a coordinator. Coordinators are the following words:
The complete subject is 'Kim's favorite breakfast cereal...', the simple subject is cereal.
Compound simple
A simple sentence is a sentence, for example: I played a game. And a compound sentence is I played game and I ate my food.
This sentence is a simple sentence because it contains only one independent clause.
This sentence is a simple sentence.
compound
Simple sentence, compound sentence, complex sentence and compound complex sentence.
compound sentence, simple sentence, and complex sentence
"Write a simple sentence" is a simple sentence. Other examples: The dog buried the bone. Mary sang. George snorted. Pedro had breakfast.
nothing
Yes, it is possible to use a compound subject in a simple sentence. A compound subject consists of two or more subjects that are connected by a coordinating conjunction such as "and" or "or." For example, "Sara and Emma went to the park" is a simple sentence with a compound subject "Sara and Emma."
simple