Which sound exemplifies a liquid manner of articulation?

The sound that exemplifies a liquid manner of articulation is indeed /l/. In phonetics, liquids are a category of consonant sounds that include /l/ and /r/. They are characterized by a relatively open vocal tract compared to other consonants, which allows for a smooth transition of air. The /l/ sound, specifically, is produced with the tongue raised toward the alveolar ridge, creating a consonant that has a clear and flowing quality, permitting the vocal tract to remain relatively unobstructed. This quality is what makes /l/ a liquid sound, distinguishing it from other types of consonants that involve more constriction or obstruction in the vocal tract.