Concept:Sensory imagery appeals to the five senses to make descriptions vivid.Explanation:The phrase "blurred into life" describes how the cutter blade looks as it spins very fast.Blurring is a visual effect; it makes the blade appear unclear to the eye.It does not suggest a sound, a texture, or a taste.Instead, it creates a clear picture in the reader's mind.Therefore, the expression appeals to the sense of sight.Answer:Sight