Answer:
b. The appearance of a substitute for DVDs with increase the elasticity coefficient for DVDs.
Step-by-step explanation:
"Price elasticity of demand" refers to the proportion of a product's percentage change in demand quantity in relation to the percentage change in the good's price. Rates are fixed in a market economy by commodity supply and demand factors.
Markets consist of producers and consumers. Our analysis of buyers' behaviour is focused on demand curves; supply curves reflect sellers' behaviour. The lesser the good's price, the greater the quantity consumers want to buy, as per the “law of demand”.
If a new technology substitutes the DVD, which leads to decrease in their demand. This further leads to the increase in price. Assuming the elasticity is 3.0, a price increase of 10 percent will lower the demand quantity by 30 percent (30 percent/10 percent or 3.0). Thus, the DVD’s elasticity coefficient will increase.