Concept:The underlined vowel in "white" is pronounced as the diphthong /aɪ/.Explanation:The word "white" is spoken as /waɪt/.The underlined letter i here produces the sound /aɪ/, not a short vowel.Check each option.Option A: "pair" has the vowel sound /eə/.Option B: "hit" has the vowel sound /ɪ/.Option C: "bye" has the vowel sound /baɪ/, so it contains the same /aɪ/ diphthong.Option D: "writ" has the vowel sound /ɪ/.Only "bye" matches the vowel sound of the underlined letter in "white."Answer:C. bye