An experiment should have only one independent variable.
I believe the answer would be: B
Because, proprioceptive neuromuscular facilitation is a method of stretching muscles to maximize your flexibility. This is usually done with a partner and involves series of contractions as well as relaxations.
Hope this helps
Answer:
You can get work done faster and just put some music on to help you concentrate.
Explanation:
listening to music can get distraction of thoughts out of you head because you are listening to someone who is putting in effort to sing and make it sound nice. Especially if you have ADHD, it helps a lot.
b. to include all required nutrients
B is correct....
Please vote my answer brainliest. thanks!