Answer:
The condition in which fatty plaque builds up in arteries, eventually narrowing the lumen (the inner space of the artery) and restricting blood flow, is called **atherosclerosis.** Atherosclerosis is a common cardiovascular disease and a major cause of various heart-related problems, including heart attacks and strokes. It occurs when cholesterol and other substances accumulate in the walls of arteries, forming plaques that can harden and narrow the arteries over time, leading to reduced blood flow.
Step-by-step explanation: