What are red flags that may indicate deception in a witness's account?

B is the correct choice because overly elaborate details and inconsistent information are strong indicators that a witness may not be providing truthful testimony. When an individual embellishes their story with unnecessary details, it often suggests they are trying to cover up the truth or make their account more believable than it actually is. Inconsistencies in their statements can also raise suspicion, as a reliable account is typically consistent. Witnesses who are truthful usually have a coherent narrative that aligns across different retellings, whereas deceptive individuals may struggle to keep their story straight.

The other options represent traits typically associated with truthful and confident communication. Consistent information and a calm demeanor typically suggest that a witness is at ease and comfortable with their narrative. Likewise, confident posture and clear statements as well as direct eye contact and simple answers often indicate confidence and sincerity in the witness's account. These are all behaviors that would generally not raise red flags in terms of deception.