Sarah is conducting an admission-seeking interview of a suspect.

Body language alone (e.g., avoiding eye contact) cannot be taken as proof of deception. The Manual warns against drawing conclusions from a single behavioral cue:

“Avoiding eye contact isnot directly linked to deception. Such behavior could stem from cultural norms, nervousness, or personality traits. Examiners should consider clusters of behavior, context, and corroborating evidence before concluding deception”.

Therefore,Cis correct.