Rob Crusoe and Bill Friday spent their week-long vacation on a desert island where they had to find and make their own food. Rob and Bill spent one day each fishing and picking berries. The following table lists the pounds of output Rob and Bill produced.
Berries Fish
Rob 20 80
Bill 30 60
a. Bill has a comparative advantage in picking berries.
b. Rob has a comparative advantage in picking berries.
c. Bill has a comparative advantage in catching fish. d. Rob has a comparative advantage in catching fish and picking berries.

d. all of the above are true.

being born in poverty would limit the people's chances, opportunities and benefits.

this happen because of several things, such as:

- poor people tend to gain less access to good education and nutrition. this mean that their chance to obtain high paying jobs would also be limited.

- poor people tend to socialize with other poor people while the rich tend to socialize with other rich people. this means that simply throguh their social circle, rich people would have more business opportunities compared to the poor people.

- rich people tend to have more capital in their disposal. this would benefit them in business since it is far easier for them to fund their business operation compared to poor people.