Question

day 1: download or print the pdf for this lesson and follow along in the notice and wonder science experiment lab report as instructed. after completing today’s tasks in the lab report, come back and answer the practice questions for day 1. what is the independent variable in this science experiment? there is not an independent variable in this experiment. the color of the food coloring is the independent variable. the type of salt is the independent variable. the size of the crystals is the independent variable.

Explanation:

In a science experiment, the independent variable is the one manipulated by the experimenter. For a salt - related experiment (implied by options about salt type, etc.), the type of salt is a typical independent variable as it's what's changed to observe effects. Other options: food coloring color is unrelated (if experiment is about salt), and crystal size is likely a dependent or controlled variable. Also, most experiments have an independent variable, so the "no independent variable" option is wrong.

Answer:

The type of salt is the independent variable. (Assuming the third option's text is "The type of salt is the independent variable" after correcting the typo. If the options are labeled, e.g., C. The type of salt is the independent variable, then the answer would be C. The type of salt is the independent variable)