<span>I am assuming it is aimed for a formal format and so the second option is correct.</span>
Answer:
algebraic expressions use variables, in problems you can pick one thing and call it X and another thing and call it Y. whatever those two things you picked can equal some unknown thing.
The correct answer here is option B
The best and most correct answer among the choices provided by the question is the first choice , <span>serious and somber.</span>
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
It creates surprise by allowing readers to think that the character just to find out the character is not who the seem to be.
Hope this helps this the best why I could explain
