-Answer: Since Paula started attending culinary school last spring, she's become far more discerning in her resturant choices," Shawn observed.
-Explanation: A comma was added after the word 'spring' to avoid this sentence becoming a run-on sentence. The comma acts as a separator or a 'pause' between the numerous words in the sentence.
It depends on what type of essay you are writing . If it’s argumentative it also depends on if you are writing it for the intro. The intro goes: Hook- catch attention Thesis- restate argument Claim- what you think