There must be a comma after however.
I have decided to travel to Europe next year; however, my family will not accompany me.
The correct answer is <span>a. Even the adults were jumping and splashing like children, who usually don't play much.
The clause "who usually don't play much" refers to adults and not children. Here however, due to misplacement, it makes it seem as if the children are the ones who don't play much.</span>
-Hamlet believes that his love was more sincere.<span>Hamlet believes that his love for her was greater.
-Hamlet believes that Laertes's grief is showy and exaggerated.
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