I would say 4, it seems a lot clearer than the other answers to me.
A simple sentence contains one clause, which just means one subject one verb. She runs. Go. Freddie happily walked. A compound sentence includes two or more independent clauses. An independent clause is a clause that doesn't need another clause to make sense. For example: Sally eagerly jumped up and down, and George anxiously waited for the surprise. Sally eagerly jumped up and down. George anxiously waited for the surprise. Both of these clauses make sense by themselves, and that makes them independent. A compound sentence also includes FANBOYS (for, and, nor, but, or, yet, so) with a coma. A complex sentence has at least one independent clause plus at least one <span>dependent clause with the use of a subordinating conjunction. One of the most popular subordinating conjunction is because, and it can be used in the beginning or middle of the sentence.
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Answer:you already answered but d
Explanation: i did it
1. Identical twins are more likely to have roughly equal intelligence levels than fraternal twins.
2. "<span>Overall, the test scores of the identical twins were much closer together than those of the pairs of fraternal twins."
</span><span>"Ten pairs were identical twins, both developing from the same egg in their mother. The other ten pairs were fraternal twins."
The paragraphs compare the two, but show that it builds to that conclusion by showing those details. These seem like opening paragraphs too, so the final sentence would be the thesis statement. The thesis statement normally tells the reader the author's claim, so those two quotes I pointed out are its supporting details.</span>
