Answer: d. The price of resume paper has decreased. Because of this, Lauren can now afford to purchase more paper and an additional portfolio and still be within her budget for gifts.
Explanation:
Cross price elasticity has to do with how the quantity demanded of a particular good or service is affected by price of another different good or service which could either be a complement of the good or its substitute.
Therefore, the option that denotes a cross price elasticity based on the definition above would be the price of resume paper has decreased. Because of this, Lauren can now afford to purchase more paper and an additional portfolio and still be within her budget for gifts.