Final answer:
The sentence 'Garrett wore blue jeans and a polo shirt' is a compound sentence.
Step-by-step explanation:
The sentence 'Garrett wore blue jeans and a polo shirt' is an example of a compound sentence. A compound sentence is a sentence that contains two or more main clauses that are equally important to the meaning of the sentence. In this case, the main clauses are 'Garrett wore blue jeans' and 'Garrett wore a polo shirt,' joined together with the coordinating conjunction 'and.'