The variables in the experiment are controlled, independent, and dependent. In baking the cake the temperature is independent, and the time to bake is the dependent variable. Thus, option D is correct.
An independent variable is a value or a parameter that can be manipulated and altered to analyze its effect on the experiment and its constituents. They do not get influenced by other variables.
The temperature of the oven is the independent variable as it determines the rate at which the cake gets baked. It affects the dependent variable like the time required for the cake to get baked.
An independent variable is a cause that varies the dependent variable and its effect. It is not a constant value and hence gets changed according to the need.
Therefore, option. D. temperature of the oven is an independent variable.
Learn more about independent variables here:
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Your question is incomplete, but most probably your full question was, The higher the temperature of the air in the oven, the faster a cake will bake. Identify the independent variable.
A. Time needed to bake the cake
B. Type of oven
C. Cake flavor
D. Oven temperature
