Research of which approach to authentic leadership was conducted using interviews of successful leaders?

The answer is the George’s practical model. This is a research used for approaching leadership with the use of having to use interviews where in successful leaders are being interviewed to gain a more better understanding or basis in differentiating leadership.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;

i think it's b or c hope this