Charity has swollen glands and a bright red tongue. she has:
pneumonia
tuberculosis
scarlet fever
whooping cough

Charity has scarlet fever because having swollen glands and a red tongue are symptoms of this disease. This type of disease is caused by a steptococcusor infection, a type of bacteria that generally affects a small percentage of people who have strep throats or streptococcal skin infections. The disease can be treated with antibiotics and is considered only as a mild illness but it should be treated quickly to prevent serious long-term health problems. It usually affects 5-15 year olds where the classic symptom of the disease includes a red rash that feels rough like sandpaper. 

Behavioral science is the study of human behaviors and how they can be influenced.  by examining patterns in behavior as well as reactions, individuals with behavioral problems can be more adequately treated, resulting in greater mental health of our society/the public.