Concept:Price elasticity of supply measures how quantity supplied reacts to a change in price. Consumer income affects demand, not supply.
Explanation:Supply elasticity is influenced by production-related factors such as time period, cost of production, availability of inputs, spare capacity, storage ease, and the nature of the product.
Time period matters because supply can adjust more easily over a longer period.
Cost of production affects how quickly producers can increase output.
Nature of the product determines whether supply can be changed quickly or is fixed in the short run.
Size of consumer income influences demand, not the responsiveness of supply to price changes.
Therefore, it is not a factor affecting price elasticity of supply.
Answer:C. Size of consumer income.