A. This applies to material goods generally and therefore to the greater part of the present economic life of the world.
B. We may distinguish two sorts of goods, and two corresponding sorts of impulses.
C. The food and clothing of one man is not the food and clothing of another; if the supply is insufficient, what one man has is obtained at the expense of another man.
D. On the other hand, mental and spiritual goods do not belong to one man to the exclusion of another.
E. There are goods in regard to which individual possession is possible, and there are goods in which all can share alike.
BECAD
Sentence B is the best option for the first sentence as it initiates a theory. Sentence E then builds on it and tells us what are these types of goods. Sentence C then starts by citing example of one type among these two and sentence A generalizes this to apply to material goods. Sentence D then talks about the second type of goods. This makes choice (a) correct.