Answer: B) subtle discrimination based on secondary characteristics.
Step-by-step explanation:
There are Primary and Secondary Characteristics of Diversity.
Secondary Characteristics of Diversity are those attributes that can be changed and include but are not limited to, educational background, geographic location, income, marital status, weight, religious beliefs, and work experiences.
The attributes that Bob says he has no problems with are PRIMARY in nature but he seems to have problems with the weight and educational backgrounds of some employees and insinuates that they are less efficient at doing what he does.
This is subtle discrimination and it is based on their secondary attributes.