Students tested three designs for a water-bottle filling nozzle. Criteria: fill quickly but avoid splashing. They measured fill time for 500 mL and splash area on paper (cm², lower is better). Results: - Nozzle A: 18 s, splash 140 cm² - Nozzle B: 26 s, splash 35 cm² - Nozzle C: 21 s, splash 60 cm² Targets: fill time 22 s or less and splash area 70 cm² or less.