Joey is participating in an experiment on memory. He is asked to read a sentence and then hold the last word in his memory while he reads the next…

Joey is participating in an experiment on memory. He is asked to read a sentence and then hold the last word in his memory while he reads the next sentence. The experimenter measures the maximum number of sentences Joey can read while doing this memory task. Joey is doing the  task.

a.   reading span

b.   digit span

c.   delayed response

d.   mental rotation