Verification of truth – "In every singing, it should have ____." Identify the necessary element.

Introduction / Context:In exam usage, “singing” typically implies vocalization of lyrics; chorus/drum/musician are optional adornments.

Given Data / Assumptions:Scat/humming exist, but the intended conventional answer is “words.”

Concept / Approach:Pick the element most intrinsic to typical singing.

Final Answer:Words