You will conduct an experiment of your own design to investigate thermoregulation in crickets. Which of the following factors would be the most important independent variable (experimentally controlled / varied / manipulated by you) to determine the relationship of temperature and metabolism rate in crickets?
a) -sex of cricket
b) -time
c) -variation in cricket body temperature
d) -variation in ambient / surrounding environment temperature
e) -cricket response (change in metabolic rate)

variation in ambient / surrounding environment temperature

Explanation:

An independent variable can be described as a variable which is being changed by nature or by the researcher to study its effect on the dependent variable. In the experiment being performed, thermoregulation in crickets is the dependent variable. The variations which we will make in the surrounding atmospheres to check its effect on the differences in thermoregulation will be the independent variable for our experiment. Hence, option D is correct.

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