Concept:The letters "oo" in "nook" are pronounced with the short vowel sound /ʊ/.Explanation:The word "nook" is pronounced /nʊk/.Its vowel sound is the short /ʊ/, exactly like the vowel in "good" /ɡʊd/.The other options do not share this sound:"noon" has the long vowel /uː/."poor" has /ʊə/ or /ɔː/."food" also has the long vowel /uː/.Therefore, the word that has the same vowel sound as "nook" is "good".Answer:C. good