The answer is c. Because it makes sense. You can see for yourself: Antarctica is the coldest continent on earth and it holds the record for the lowest temperature ever recorded.
A i got this right on my test rn.
The correct choice to combine the sentences is A. Earth; it, which uses a semicolon to connect the two independent clauses clearly. This maintains the integrity and meaning of the original sentences. Combining with a semicolon is appropriate here as both clauses are related closely.
;