|Question 12Verbal

Source Texts

Text
The term "retroflex" derives from Latin and means "bent back," an apt descriptor for the branch of consonants-retroflex consonants pronounced with the tongue curling up and back in the mouth. In many languages, including English, these consonants are        in some dialects of Mandarin, however, four such consonants ("ch," "sh." "zh." and "r") are relatively common.
Which choice completes the text so that it conforms to the conventions of Standard English?
rare:
A
rare;
B
rare,
C
rare
D