When Dubbing a Film into Another Language Has Been Done

Multiple Choice

When dubbing a film into another language has been done very well, the sound team has taken advantage of which aspect of speech perception?

A) You cannot tell, just by looking, how rounded or spread a speaker's lips are held unless you have extensive familiarity with the speaker's face and lips.
B) The McGurk effect works only for vowels, so the soundtrack has more influence than the video image.
C) Viewers take pride in their own language, so they tend to "see" it in all actor speech, especially when the actor is attractive.
D) Voicing and tongue gestures are barely visible, or are invisible, meaning that the actor's appearance is compatible with multiple phonemes.