The correct approach will be the "Linguistic-relativity hypothesis".
Explanation:
This theory can be defined as either the Hypothesis of Sapir-Whorf. This theory proposes whether our cognitive capabilities are influenced by languages as well as decide how we start behaving and communicate throughout society.
Sapir Whorf explains these variations throughout the nature of human language throughout the manner a person understands the world.
A) The independent(test) variable controls the dependent variable. A good way to think about this is that the independent variable has nothing that effects itself. The dependent variable is 'dependent' or reliant on the independent variable.