Final answer:
It is true that the brain can fill in blanks in a conversation stemming from background noise, utilizing contextual cues.
Step-by-step explanation:
When faced with a noisy environment or background disturbances during a conversation, it is true that the mind can fill in the blanks caused by the noise. This phenomenon is part of the brain's ability to use context and prior knowledge to predict and interpret sensory information, allowing a person to understand a conversation despite auditory interference. This is an aspect of top-down processing, where the brain actively works to make sense of incomplete information.