Which SQL keyword is used to sort the result-set?

Answer: Option C

The SQL keyword used to sort the result-set in a specific order is ORDER BY. Here's a brief explanation of each option:

Option A: SORT BY
There is no standard SQL keyword called SORT BY for sorting result-sets.

Option B: ORDER
The ORDER keyword, by itself, is not used to specify the sorting of a result-set. It's typically used in combination with BY as ORDER BY.

Option C: ORDER BY
The ORDER BY clause is used to specify the sorting of the result-set based on one or more columns. You can use it to sort the result-set in ascending or descending order.

Option D: SORT
SORT is not a standard SQL keyword used for sorting result-sets. The correct keyword is ORDER BY.

So, the correct SQL keyword to sort the result-set is Option C: ORDER BY.