Concept:Homonyms are words that sound the same but have different spellings and meanings.
Explanation:“Exemplar” means a perfect example. Among the given options, “aisle” and “isle” are homonyms because both are pronounced identically.
“Aisle” means a walkway between seats, while “isle” means an island.
All other options have different pronunciations, so they are not homonyms.
For instance, “beer” and “bear” sound different, “stale” and “stall” are not pronounced the same, and “stock” and “stoke” also differ in sound.
Thus, only “aisle/isle” fits the definition of homonym.
Answer:Option A: aisle / isle