Answer:
d. Between 5 and 9 items from the list.
Explanation:
George Miller's research: The research on magical number seven was published in 1956 in Psychological Review by George A. Miller.
The cognitive psychologist named George Miller has given the magical number seven. He believed that an individual can process 7 ± 2 objects consciously at a time. The magical number seven plus or minus two demonstrate the capacity of an individual's short-term memory. An individual can store five to nine items in his or her short-term memory at a time.