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For items 1-2 Nigel was tasked by his teacher to investigate on how fast table salt dissolves in cold water 1. Which variable is being measured by Nigel? 1. The amount of table salt. II. The temperature of water. III. The time the table salt will completely dissolves in hot water. IV. The time the table salt will completely dissolves in cold water. Al only B. I and II D. II and IV C. III only 2. What is the independent variable in the investigation being conducted by Nigel? A. Concentration of salt C. Temperature of water D. Not given B. Length of time table salt dissolves​