I think the correct answer from the choices listed above is option B. The narrator allude the to the possibility of requiring a wife who could match Adams social standards at the end of the sentence from Mark Twain's "The 1,000,000 Bank-Note". Hope this answers the question.
Broader:
The effects around the globe
The effects around Europe
The effects around Italy
Explanation:
A broad topic is going to cover the most things or places. In this instance, looking at the effects of rising sea levels in the globe is going to be much more generalized than a look at just Italy.