Which part of memory holds sensory information for brief moments?

The sensory register is the correct choice as it specifically refers to the component of memory that retains sensory impressions for a very short period, typically less than a second for visual information and a few seconds for auditory information. This part of memory captures details from our environment through our senses, allowing us to experience and process stimuli before deciding what to focus on or transfer into short-term memory.

This fleeting retention is crucial as it enables us to decide what information is relevant and worth remembering. Meanwhile, the other types of memory, such as long term memory, short term memory, and working memory, involve longer durations of retention and processing of information. Long term memory involves the storage of information over extended periods; short term memory holds information temporarily for use within a limited time frame; and working memory deals with manipulating and processing information temporarily. Each plays a different role in the overall memory system but does not specifically address the immediate and transient nature of the sensory register.