What type of abuse is the most common form of discrimination?

direct discrimination

There are a few types of discrimination: direct, indirect, harassment, sexual, and victimization. Among them, direct discrimination is the abuse that is simplest and most common. This is an unfair treatment because of another person’s perceived characteristics or its association with protected characteristics.

which of what? i am confused

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.