C) long-term memory has an essentially unlimited storage capacity.
Long-term memory refers to the memory processes in the brain that store information from short-term memory and create long-term memory. These memories are from an hour or decades ago. Long-term memory can store an unlimited amount of information for an infinite period of time.
Long-term memory is the stage of the Atkinson-Shiffrin memory model in which useful knowledge is stored indefinitely. This is defined in contrast to short-term or working memory, which only lasts about 18-30 seconds.
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