Concept:The correct choice must share the same vowel sound as the underlined letters, not the same spelling pattern.Explanation:The underlined sound in the question is the long vowel /u:/.Check each word’s vowel sound to find the exact match.Option A: truce→/tru:s/ contains /u:/.Option B: pull→/pυl/ has the short vowel /u/, not /u:/.Option C: doe→/doυ/ has the diphthong /ou/, not /u:/.Option D: shore→/ʃɔː/ has the open vowel /o:/, not /u:/.Only truce contains the exact vowel sound /u:/.Answer:A. truce