Please choose the correct answer to the question: In an investigation, a student wants to see how a ball is affected by rolling it over a surface covered with sandpaper. In preparation for the trial, the student makes a list of the possible conditions that could affect the investigation. The student is most likely listing the

Answer1: constants. Answer2: variables. Answer3: controls. Answer4: trials.

Answer format: answer1/answer2/answer3/answer4
Answer: answer2