Question 2(i): Assume that scientists at KFUPM discover a new supplement that allows one to sleep 25% less time than before without affecting one's overall mental and physical health (e.g., if one sleeps 8 hours per day, after taking this supplement one can sleep 6 hours without adversely affecting one's mood, mental and physical health). Assume this supplement is provided free of cost to all scientists at KFUPM. Use the labor-leisure choice model to illustrate the change in optimal choice of scientists at KFUPM before and after this supplement was invented.

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