Ryan suffers from schizophrenia. He often mixes up words and ends up talking about things which make no sense. Which symptom of schizophrenia is Ryan exhibiting?

A) Hallucinations
B) Disorganized, incoherent speech
C) Grossly disorganized and inappropriate behavior
D) Rumination

Disorganized, incoherent speech is a symptom of schizophrenia known as formal thought disorder. It is characterized by jumbled speech, rapidly shifting topic, and illogical connections between ideas. This is different from hallucinations, which involve experiencing things that are not actually there, such as hearing voices or seeing things that aren't real. Grossly disorganized and inappropriate behavior refers to behavior that is bizarre or socially inappropriate. Rumination is a symptom commonly associated with depression, and involves persistently thinking about negative experiences or emotions.