• 1. Meaning of the Word: The word discern means to recognize, distinguish, or identify something that is hidden, unclear, or difficult to see. It involves mental sharpness to pick out the truth from a complex situation.
2. Why 'Perceive' is the answer:
Meaning: Perceive means to become aware of something or to realize/see something clearly.
Context: In the sentence, the detective needs to "see through" the lies to find the truth. "Perceive" fits perfectly as it describes the act of sensing or identifying that truth.