Answer:
Th correct option is A. light colour
Step-by-step explanation:
An independent variable is described as a variable which doesn't get affected by another variable. In a scientific experiment, an independent variable is a controlled variable whose effects are checked on a dependent variable. Hence, Light colour is independent in the above experiment being performed by Tasha.
A dependent variable changes with a change in any other variable. Hence, light intensity, amount of light and temperature of light are the dependent variables.