B?
They want me to add at least 20 characters for some reason so that's why I wrote this. You don't have to read it. Life is good.
Answer:
how are you going to answer
Answer:
Tobacco use is the single most preventable cause of disease, disability, and death in the United States.
The answer is: There is no error.
Complex sentences consist of a subordinate or dependent clause, which is introduced by a subordinating conjunction like <em>even though</em>, and an independent clause, which can stand on its own. They can be separated by a comma.
In the example sentence, the subordinate clause is:
Even though I had no previous experience,
Finally, the independent clause is:
I enjoyed painting the living room with my friends.
The rest of the alternatives are incorrect because the clauses are separated or do not express the same meaning as the original sentence.
In reverse engineering, the scientist get the result first, then they examine that result to find out what caused the result.
From the options , the one that filled this criteria of reverse engineering would be : A intelligence testing, which gathers data based on research subjects' test scores
hope this helps