Answer:
stress
Step-by-step explanation:
Edgar is a hardworking person. He seems to complete as many demands as his will power and strength permit him to do so. Yet, humans have physical and mental limits to complete demands of works. And if so many work demands crop up at the same time, anyone, like Edgar, will be in huge stress. Edgar feels he should complete all demands, yet he doesn't have the energy to do it. Hence, he is stressed with tension. And there is the time limit to finish a demand. If the time limit does not allow Edgar to complete all the demands, he must be in stress by exercising too much physical and metal strains.