Concept:Identify the consonant sound made by the underlined letters in “chef”.Explanation:The word “chef” is pronounced /ʃɛf/, so the underlined “ch” has the sound /ʃ/.Option C, “shield”, also begins with the /ʃ/ sound.The other options begin with different sounds: “chord” with /k/, “chair” with /tʃ/, and “scheme” with /sk/.Answer:C. shield