Question

which sentence is the best revision of \it has more shoreline than californi florida and hawaii combined!\?
a. it has more shoreline than california, florida and hawaii combined!
b. it has more shoreline than california, florida, and hawaii combined!
c. it has more shoreline than california florida, and hawaii combined!
d. no change necessary

Explanation:

To determine the best revision, we analyze the use of commas in a series. In a list of three or more items, the Oxford comma (the comma before the conjunction "and") is a matter of style, but here we also need to ensure proper separation of the place names. Option A correctly separates "California", "Florida", and "Hawaii" with commas (the Oxford comma is optional in some styles, but the main issue is proper punctuation between the items). Option B has an extra comma before "and" which is not incorrect in all styles but Option A is more standard. Option C lacks a comma between "California" and "Florida", which is incorrect punctuation. The original sentence had a typo or missing comma, so a revision is needed, so D is wrong. Among A and B, A is a more standard revision for proper listing of the three states.

Answer:

A. It has more shoreline than California, Florida and Hawaii combined!