In 1976, the United States of America celebrated it's Bicentennial. Good luck on your homework.
Answer:
posttraumatic stress disorder.
Explanation:
The posttraumatic stress disorder which is popularly known as PTSD is a kind of disorder that occur when someone is unable to to regain his or her sense back because of the bad or traumatic experience that person has witnessed before.
This is the same case with the mayor, the mayor of Springfield has probably witnessed the terrible car accident involving 25 cars that all caught on fire twenty years ago and the mayor has not recovered from the traumatic experience.
The symptoms of posttraumatic stress disorder includes flashback, fear, self-destructive behaviour, nightmares, agitation and many more.
It can be treated by using psychotherapies and through the use of medications.
A. freshwater fishing.
my reasoning:
Inside the Middle East, most countries have large supplies of oil, (which helps make the countries rich as they are today because of oil demands), which takes out the options C & D. The Middle East, is located within the Sahara desert, and so can contribute to desert research (B) as well.
So A, is your most logical choice.
hope this helps
All of the following are caste classes (Brahmins - priests, Kshatriyas - soldiers and administrators, and Vaishayas - merchants) except for B. untouchables, who were completely excluded from the caste system.