Question

question 5
the sentence on the right should be classified as a—
simple sentence
compound sentence
complex sentence
compound - complex sentence
when connor arrived at school, he realized that he
had left his report at home, and he frowned
unhappily.

Explanation:

1. Analyze the sentence structure: "When Connor arrived at school" is a dependent (subordinate) clause (adverbial clause of time). "he realized that he had left his report at home" is an independent clause with a dependent noun clause ("that he had left his report at home"). "and he frowned unhappily" is another independent clause.
2. A compound - complex sentence has at least two independent clauses and at least one dependent clause. Here, we have two independent clauses ("he realized that he had left his report at home" and "he frowned unhappily") and one dependent clause ("When Connor arrived at school").
3. A simple sentence has one independent clause. A compound sentence has two or more independent clauses joined by a coordinating conjunction (but no dependent clauses). A complex sentence has one independent clause and one or more dependent clauses. So this sentence fits the compound - complex structure.

Answer:

D. compound - complex sentence