<span>This is an example of an autonomic reflex. An autonomic reflex is the automatic response of the body to the changing situations that it is exposed to, like a change in the temperature. The CNS signals the body to automatically responds to the stress and gives it the necessary adaptation for it to survive. <span>
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Answer:
The correct answer is option D. they were part of the control group.
Explanation:
A control group is a group of subjects different from the other test subject as they did not get the independent variable's effect on them and separated from the rest of the experiment. This group of subjects is used to rule out any other explanation of the effect of the independent variable.
In this experiment, subjects that received a placebo injection are the control group as they did not expose to the mutated virus and there are the presence of antibodies in the blood.
Both the Artic (North Pole) and the Antarctic (South Pole) do not receive direct sunlight, which leads to extremely cold temperatures.
In the Summer, the average temperature in the North Pole is around 32F (0C) and in the South Pole, the average in the summer is -18F (-28.2C).
In the winter, the average for the North Pole is -40F (-40C) and in the South Pole its -76F (-60C)
