50 points i give brainiest answer if you julie's science teacher asked her to use quantitative observation to distinguish between 3 metal cylinders to identify aluminum, brass, and copper. what should she do first? a) use color to identify the metals. b) calculate the density of the samples. c) determine the temperature of the metals. d) measure the malleability of the cylinders. ben was conducting an experiment on the growth of soybeans. he was investigating the effect of fertilizer on height. which observation made by ben is qualitative? a) each plant was grown for 45 days. b) each plant was give 100 ml of water twice daily. c) soybeans that received fertilizer germinated before those that did not. d) the soybeans plants that received fertilizer grew to an average height of 26 inches.