How did Mansa Musa “put Mali on the map”?How did Mansa Musa “put Mali on the map”?

Na test of the effects of sleep deprivation on problem-solving skills, research participants are allowed to sleep either 4 or 8 hours on each of three consecutive nights. this research is an example of: a)naturalistic observation. b)survey research. c)a case study. d)an experiment. e)correlational research.