Detailed Explanation:

Answer: Option 3 — Insects

All three organisms—Cicada, Froghopper, and Pond Skater—are classified as insects belonging to different families within the class Insecta. Cicadas are known for their loud mating calls, froghoppers (spittlebugs) are famous for the foam they produce as nymphs, and pond skaters use surface tension to walk on water.

📝 Short Notes: Classification of Common Insects

• Cicada: Order Hemiptera; known for their distinctive loud buzzing sounds produced by males during mating season; have a long lifecycle with some species emerging every 13-17 years.
• Froghopper (Spittlebug): Order Hemiptera; small jumping insects; nymphs produce foam (cuckoo spit) on plants for protection; adults are powerful jumpers.
• Pond Skater (Water Strider): Order Hemiptera, family Gerridae; use surface tension and hydrophobic legs to walk on water; predators of small aquatic organisms.
• Common Feature: All three belong to Order Hemiptera (true bugs), characterized by piercing-sucking mouthparts and incomplete metamorphosis.
• Ecological Role: These insects play important roles as herbivores, predators, and prey in their respective ecosystems.