Alvin's preferences for good X and good Y are shown in the diagram below. 
Figure 3.1
-Refer to Figure 3.1. Which assumption concerning preferences do Alvin's indifference curves violate?
Definitions:
Annelids
A phylum of invertebrate animals known as segmented worms, which includes earthworms, leeches, and their relatives, characterized by a segmented body and a coelom.
Two Openings
Refers to organisms with a digestive system that has a distinct mouth and anus, allowing for a one-way flow of food and waste.
Cnidarians
A phylum of aquatic invertebrates known for their distinctive body structure with a jelly-like substance called mesoglea, radial symmetry, and specialized cells called cnidocytes.
Tapeworms
Tapeworms are flat, segmented parasitic worms that live in the intestines of some animals, including humans, often causing health issues.
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