When you take a picture it pulls up people who asked the same question and they’ll have a answer you can use
The answer is
C. They have all ready achieved high levels of cardio respiratory fitness.
<span>In an experiment, a researcher can make claims about causation if the independent variable changes because of changes made to the dependent variable. Causation works on cause and effect, so the changed independent variable is the cause and the changed dependent variable is the effect. In an experiment the independent variable is changed to determine the dependent variables value, so the two are directly related.</span>
Attenuation is the correct answer.
