Research on Context and Speech Perception Has Demonstrated That

Research on context and speech perception has demonstrated that

A) people are amazingly accurate in identifying when speech sounds are missing in a sentence.
B) people often do not notice a missing sound when it occurs within the context of a sentence.
C) speech perception is almost entirely a bottom-up process.
D) when a phoneme in a sentence is mispronounced, people typically cannot understand the sentence.