Understanding Homonyms

The question asks to identify the sentence that uses a homonym of the word "tonsure". A homonym is a word that shares the same spelling but has a different meaning.

Analyzing the Word "Tonsure"

The highlighted word "tonsure" in the context "The cleric described the tonsure as a sacred act" refers to the practice of cutting or shaving the hair on the scalp, typically as a sign of religious devotion or humility.

Examining the Options

• Option 1: "The friar received his tonsure before initiation." - This sentence uses "tonsure" in its common religious meaning (haircutting).
• Option 2: "The biologist found a tonsure on the frog's dorsal fin." - This sentence uses "tonsure" in a biological context. This implies a different meaning, possibly referring to a distinct marking or feature on the frog, different from the religious practice.
• Option 3: "The medieval tonsure was symbolic of humility." - This sentence also refers to the religious practice.
• Option 4: "The monk's tonsure marked him as a Benedictine." - This sentence continues the religious context of "tonsure".

Identifying the Homonym Sentence

Option 2 is the only sentence that employs "tonsure" with a meaning distinct from its primary religious definition. It uses the same spelling but suggests a different meaning in a biological setting, thus functioning as the intended homonym.