Foreign is not long term solution of unemployment and it is neither the base of economic development of the country

Foreign is not long term solution of unemployment and it is neither the base of economic development of the country because every country have their rules and regulations. When you work in a foriegn country all your efforts will go to the other country not to your motherland. And working for foriegn country you don't pension and you retire soon too.

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;