Answer: The sentence "I have never eaten and rested so well." is a compound-complex sentence.
Step-by-step explanation:
The sentence "I have never eaten and rested so well." is a compound-complex sentence. A compound-complex sentence is a sentence that has two or more independent clauses (clauses that can stand alone as a complete sentence) and at least one dependent clause (a clause that cannot stand alone as a complete sentence and must be connected to an independent clause).
In this sentence, "I have never eaten" is an independent clause and "and rested so well" is another independent clause. These two independent clauses are joined by the conjunction "and." The sentence also does not contain any dependent clauses. Therefore, it is a compound-complex sentence.