Correct option is C
Monosaccharides are the simplest carbohydrates, consisting of a single sugar molecule.
Glucose is a classic example of a monosaccharide. So, A matches with iii.
Oligosaccharides are carbohydrates composed of
a few (typically 3–10) monosaccharide units.
Raffinose is a trisaccharide and a common oligosaccharide. So, B matches with i.
Polysaccharides are large molecules made up of
more than ten sugar units, often hundreds or thousands.
Starch is a polysaccharide made of glucose units. So, C matches with ii.
Disaccharides are composed of
two monosaccharide units.
Lactose, made up of glucose and galactose, is a disaccharide. So, D matches with iv.
Hence, the correct matching is: A – iii (Glucose) B – i (Raffinose) C – ii (Starch) D – iv (Lactose)
Thus, option (c) is correct.