Step 1: Identifying the structure of the sweeteners.
Sucralose is a chlorinated derivative of sucrose, containing chlorine atoms in its molecular structure. It is the only one in the options with chlorine as part of its molecular formula.
Step 2: Analyzing the options.
(A) Saccharine: Incorrect, saccharine does not contain chlorine.
(B) Alitame: Incorrect, alitame does not contain chlorine.
(C) Aspartame: Incorrect, aspartame does not contain chlorine.
(D) Sucralose: Correct — Sucralose contains chlorine in its molecular formula.
Step 3: Conclusion.
The correct answer is (D) Sucralose.