The sweetest substance known so far is
-
sucrose
-
fructose
-
saccharine
-
glucose
C
Correct answer
Explanation
Among the given options, saccharine (saccharin) is the sweetest substance, being approximately 300-700 times sweeter than sucrose (table sugar). Sucrose is standard table sugar from sugarcane/beets. Fructose (fruit sugar) is about 1.2-1.8 times sweeter than sucrose. Glucose is less sweet than sucrose. While modern artificial sweeteners like sucralose and thaumatin are sweeter than saccharin, among these four options, saccharine is indeed the sweetest.