Concept:Compare the vowel sound in the underlined letters of the given word with the vowel sounds in the options.Explanation:In "pour", the underlined letters "our" are pronounced as /ɔː/.Among the options, "ore" is pronounced as /ɔːr/, which contains the same vowel sound /ɔː/."favour" has the vowel sound /eɪ/, while both "hour" and "how" have the diphthong /aʊ/.Therefore, the word that shares the same vowel sound as "pour" is "ore".Answer:B. ore