Which of the following statements concerning bottom-up and top-down processing is correct?

Perception often combines bottom-up processing, which uses information from the stimulus, with top-down processing, which uses expectations and prior knowledge. Because environments can be complex, people commonly rely on both at once. Top-down processing is especially useful for interpreting familiar or ambiguous stimuli, so B is incorrect; using prior knowledge describes top-down rather than bottom-up processing, making C incorrect. Inattentional blindness is failing to notice an unexpected stimulus, not a usual result of combining these processes.

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