I am in karachi, because Karachi is a city and you can't be "at" a city. Saying I'm at only works if it a place such as a grocery store or a mall, but does not apply to cities or countries.
B) Adverb - of place (after the object)
This is a metaphor. unlike a simile, for example, Brave as a fox comma it does not use like or as. the definition of a metaphor is, a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable
Answer: Monte Cristo I'd guess. I can't really read the statements
Elimination
short works should be in quotation marks but longer ones should be in italics
they should not be underlined
they should not have a period
it shold not be brief, you should not shorten a title since you didn't write the book.
answer is A