Which best describes the role of a primary consumer in a food web?

Group of answer choices

Carnivore that feeds on producers

Herbivore that feeds on producers

Herbivore that feeds on primary consumers

Carnivore that feeds on primary consumers

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.