Just try using each word in the sentence, and choose the one that makes the most sense!
1) B - Approximately.
2) D - Strength.
3) A - Named.
4) D - Set.
5) C - Creativity.
6) C - Feat.
7) D - Will have broken.
8) A - Decides.
Fusion is the process and result of joining two things together to form one, so the answer is false.
I think 21 is the third choice, 23 is the first choice, 25 is the third choice, and 26 is the fourth choice.
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.