Concept:The correct word must show a noticeable rise or increase in the price of goods due to inflation.Explanation:"Escalate" means to increase rapidly or become greater in amount. This word is commonly used for costs and prices."Ascend" means to move physically upward. It does not describe a rise in price."Intensify" means to become stronger or more extreme. It does not mean a rise in cost."Progress" means to move forward or improve. It does not express an increase in price.Therefore, the best word to complete the sentence is "escalate".Answer:A. escalate