I believe the answer is: A. De-escalation
At that time, the united states troops was losing on the battle of vietnam. The majority of united states citizens who originally supported the war started to voice up their concern and demanded the government to end the war. So Nixon created de-escalation policy to gradually pull united states troops from Vietnam.
The city had been founded by the twins Romolus and Remus.
question (2) Marginal Cost = Change in cost / Change in quantity
= 400 / 100 = $ 4
Q(3) Marginal Benefit = $500-$100 = $ 400
Q(4) Marginal benefit of 2 bags of seeds = $ 1000-$200 = $ 800
Q(5) Marginal Benefit of 3 bags of seeds = $ 1500-$300 =$ 1200
If he is being rational,maximum number of bags = depends on land available