They can work hard to achieve the goal or do the action. Some people may in this way if they are under great deals of stress. They may lash out on people around them. By how they act to a subject.
I believe the answer would be D.
I believe the correct answer is B. The modifier "wearing a blue dress" is placed far from the noun which is supposed to modify - Stacey. Such as it is, it could easily be attributed to another noun, the stage. It would seem that the stage was wearing a blue dress, rather than Stacey. This is easily fixable with a comma between "stage" and "wearing".
The C and D sentences are also a little bit awkward, but they don't contain a misplaced modifier.
I’ve read the paragraph is there any way i can help ?