I believe the answer is A) tone
Vomiting and reflux can cause these stomach acids to enter your mouth. Stomach acids are very strong and can cause substantial damage to the teeth. For example, people with bulimia, morning sickness or reflux (which can sometimes occur without you knowing) may experience this problem.
Hope this helps and if it does, don't be afraid to rate my answer as well as maybe give it a "Thanks"? (Or even better a "Brainliest"). And if it’s not correct, I am sorry for wasting your time, and good luck finding the correct answer :)
If I’m correct it’s myelination, because myelination is the process that occurs in the brain that helps your brain adapt and become better at skills.
1. grumpy
not eating for a long period of time can change your mood, anger and grumpiness is the most common
