Hello. You did not show the survey to which the question refers, which makes it impossible for your question to receive an answer with accuracy. However, I will try to help you in the best possible way.
An independent variable is one that does not depend on another element of the research to happen and that influences a result, acting on another variable.
For example, if a research seeks to understand the influence of sugar on childhood diabetes, sugar is the independent variable, as it is it that acts on the existence of diabetes.
