The blood sugar of an insect is:

Correct option is C

✅ (c) Trehalose: • Main blood sugar in insects (found in hemolymph). • Provides energy for flying and other metabolic activities. • A disaccharide composed of two glucose units.
❌ (a) Glucose: • Not the principal sugar in insect blood.
❌ (b) Mannitol: • Sugar alcohol, not the main insect sugar.
❌ (d) Mannose: • A sugar involved in plant metabolism, not common in insect hemolymph.