Whats the Independent variable for “Which Bait works best for a homemade fly trap?”

The independent variable for "which bait works best for a homemade fly trap" if using the hypothesis of   "If I use the correct bait, then I will have a successful homemade fly trap" is the bait that you are going to use.

Explanation:

Using your "if, then" statement, the cause is called the independent variable and the effect is the dependent variable.

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