An independent variable is
a.
directly changed by the experimenter.
b.
manipulated by changes to the dependent variable.
c.
a variable that is kept constant.
d.
a variable that is used as a control
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c.
a variable that is kept constant
a variable that is kept constant
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0
In the scientific terms we can say that a variable is an element,factor or feature which is liable for vary of it's numeric value.
There are mainly three types of variables , independent ,manipulated and dependent variable.
According to the question;
An independent variable is:
Ans: Option A , which can be directly changed by the experimenter
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