Which symptom may manifest through unclear speech in users of dissociative anesthetics?

The manifestation of unclear speech, particularly in users of dissociative anesthetics, is primarily associated with slurred speech. Dissociative anesthetics, such as PCP and ketamine, affect the central nervous system and can impair motor functions, leading to difficulties in articulating words clearly. Users may experience a lack of coordination and decreased cognitive function, which can cause speech to become slow and undefined.

In contrast, fluent speech and clear articulation would imply a coherent and normal flow of words, which is not characteristic of intoxication by these substances. Whispering, while it may represent a form of unclear communication, does not align with the typical effects of dissociative anesthetics on speech clarity. Therefore, slurred speech is the appropriate symptom that corresponds with the impacts of these substances on a user's ability to communicate effectively.