Concept:The underlined letters "ture" in the word "suture" produce the consonant sound /tʃ/.
So, we need the option that also carries the /tʃ/ sound.
Explanation:The word "suture" is pronounced /ˈsuː.tʃə/.
The letters "ture" together give the consonant sound /tʃ/, which is the same as the "ch" sound in "church".
Now check each option one by one.
Option A: "chalet" is pronounced /ˈʃæleɪ/.
Its "ch" gives the sound /ʃ/, like "sh". This does not match /tʃ/.
Option B: "badge" is pronounced /bædʒ/.
It contains the sound /dʒ/, not /tʃ/. This does not match.
Option C: "chalk" is pronounced /tʃɔːk/.
Its "ch" gives the exact sound /tʃ/. This matches the underlined sound in "suture".
Option D: "city" is pronounced /ˈsɪti/.
Its "c" gives the sound /s/. This does not match /tʃ/.
Hence, "chalk" is the correct choice.
Answer:C. chalk