Is it normal for a parent to slap a 12 years old In the face until he can’t hear anything and not letting him sleep til his done with his missing works?

What should be changed to make the following sentence true? "the stress model suggests that people with a predisposition for a disorder are more likely to develop the disorder when faced with stress."

The frequency in wich you perform certain exercise depends on the blank of the exercise

Viral infections in plants ) can be controlled with antibioticsb) can spread within a plant via plasmodesmata c) have little effect on plant growthd) are not spread by animals