Final answer:
The correct rewrite of the sentence is: Over 210 climbers have died scaling Mount Everest; nonetheless, this danger keeps tempting others to try their skills and their luck.
Step-by-step explanation:
The correct rewrite of the sentence using colons and/or semicolons is: Over 210 climbers have died scaling Mount Everest; nonetheless, this danger keeps tempting others to try their skills and their luck.
Using a semicolon after 'Mount Everest' separates the main clause 'Over 210 climbers have died scaling Mount Everest' from the second main clause 'nonetheless, this danger keeps tempting others to try their skills and their luck'. This correctly connects the two clauses and maintains the correct punctuation.
In option a), the semicolon is used correctly, but the coordinating conjunction 'nonetheless' should not be separated by a comma. Option b) incorrectly uses a comma after 'nonetheless' without a coordinating conjunction. Option c) uses a colon instead of a semicolon, which is incorrect. Option d) omits the necessary comma after 'nonetheless'.