Verbal Reasoning — Classification (Always/Essential component): Identify the item that a <em>song</em> must always have. Context: Consider definitional essentials versus optional features (e.g., chorus, instruments, performer counts). Choose the one that is always present in any song.

Concept
A song is, by definition, a piece meant to be sung—i.e., it contains words/lyrics articulated vocally. Instrumental pieces (without words) are not “songs” but instrumentals.

Option check

• Word — Essential (lyrics). Correct.
• Chorus — Common but not mandatory (some songs have no chorus).
• Musician — Vague; a recorded song still has lyrics; the presence/number of musicians is not the defining feature.
• Tymbal — Specific instrument; definitely not always present.

Final Answer
Word.