It's are because the phrase economics is used as a plural term in the following sentence.
Answer:
GRANTED, SOME PC OWNERS SEARCH THE WEB AND REMAIN UNSCATHED
THE ANSWER IS B
Explanation:
Answer:a memoir is a part of someone's life written by them. Therefore any sentences indicating that it was written in first person narrative would be the correct answers because the author is retelling what they had done during the event that they are writing about.
Explanation:
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.