Concept:Identify the word whose stress falls on a different syllable from the rest.Explanation:In option A, “public” has stress on the first syllable: PUB-lic.In option C, “centre” has stress on the first syllable: CEN-tre.In option D, “people” has stress on the first syllable: PEO-ple.In option B, “concern” has stress on the second syllable: con-CERN.Therefore, only option B follows a different stress pattern.Answer:B. concern