Complex or Compound Sentence?

Explanation:

Complex Sentence:
- A complex sentence is made up of an independent clause and one or more dependent clauses.
- An independent clause can stand alone as a complete sentence, while a dependent clause cannot.
- In the sentence "While he was playing, I completed my homework," "I completed my homework" is the independent clause, and "While he was playing" is the dependent clause.

Compound Sentence:
- A compound sentence is made up of two or more independent clauses joined by coordinating conjunctions like "and," "but," or "or."
- Each independent clause in a compound sentence can stand alone as a complete sentence.
- The sentence "He was playing, and I completed my homework" is an example of a compound sentence.

Conclusion:
- The sentence "While he was playing, I completed my homework" is a complex sentence because it contains an independent clause ("I completed my homework") and a dependent clause ("While he was playing").