______, vowels tend to be nasalized before nasal consonants because it is difficult to time the lowering of the velum to produce nasality with the consonant articulation.

______, vowels tend to be nasalized before nasal consonants because it is difficult to time the lowering of the velum to produce nasality with the consonant articulation.

A.Physiologically

B.Psychologically

C.Culturally

D.Sociologically

正确答案是A