Select the sentence containing the homonym of the highlighted word:

The knight adjusted his pauldron before the joust.

Correct Answer: "Professor Pauldron delivered a lecture on medieval warfare to the history students."

Understanding Homonyms:
A homonym is a word that shares the same spelling and pronunciation with another word, but has a different meaning and origin. Proper nouns (like names) that share spelling with common nouns are classic examples of homonyms.

Analysis of the Question:
The highlighted word in the sentence is pauldron (a piece of plate armor worn to protect the shoulder).
To find the sentence containing its homonym, we need to look for a sentence where "pauldron" is used in a completely different context/meaning rather than as the piece of shoulder armor.

Evaluating the Options:

1. "The armourer repaired the dented pauldron and refastened its straps."
Here, "pauldron" refers to the piece of shoulder armor. This is the exact same usage, not a homonym.

2. "In the gallery, the curator tagged the pauldron as part of a full suit of armour ."
Here, "pauldron" again refers to the shoulder armor. This is the same usage.

3. "Professor Pauldron delivered a lecture on medieval warfare to the history students."
In this sentence, "Pauldron" is used as a proper noun (a person's surname/name). Because it shares the exact same spelling and pronunciation as the armor term but refers to a person's name, it functions as a homonym.

4. "The antique dealer priced the bronze pauldron higher than the matching gauntlets."
Here, "pauldron" refers to the armor piece once again.

Conclusion:
Therefore, the sentence using the homonym of "pauldron" is: "Professor Pauldron delivered a lecture on medieval warfare to the history students."