Concept:Rhyming words share the same final stressed vowel sound and any following sounds.Explanation:The given word "potter" is pronounced /ˈpɒt.ə/.Its final stressed part has the /ɒ/ vowel followed by /tə/.Check the options:Option A: "porters" is /ˈpɔː.təz/ — different vowel sound; no rhyme.Option B: "pear" is /peə/ — no matching sound.Option C: "otter" is /ˈɒt.ə/ — same vowel and final consonant sounds; it rhymes with "potter".Option D: "rotten" is /ˈrɒt.ən/ — ends with /ən/, not /ə/; no rhyme.Answer:C. otter