A good in the presence of many close substitutes is predicted to have relativelyelastic demand, since consumers can easily choose to purchase one of the close substitutes if the price of the good were to increase. The price elasticity of demand of a good depends in part on its relative necessity in comparison to other goods. Assume the following goods all have approximately the same price. Which of the goods has the most elastic demand? Self-driving cars Insulin for people with diabetes The price elasticity of demand for a good also depends on how the good is defined