As annalisa is sitting in her bedroom listening to the radio, she notices that it suddenly sounds louder. she looks and is not surprised to find her little sister turning up the volume. how could annalisa tell that the radio became louder before she saw what her sister was doing?

I believe the answer is: bottom-up processing

bottom-up processing refers to the process of perception that start by identifying the stimulus that felt by our sensory input and move up to found the source of that stimulus.
In the scenario above, the radio voice is the stimulus that feld by Annalisa's auditory input. After feeling that, Annalisa analyze the situation to see that the increasing volume is the cause of that stimulus,

Ok we will i'm sure 456