How would you describe the size and appearance of a silverfish?

The size and appearance of a silverfish are accurately described by noting that they typically measure around 1/2 inch long and have a silvery appearance due to their scales. This silvery coloration is a distinctive characteristic that helps in identifying silverfish, as it gives them a shiny, metallic look. The body of a silverfish is slender and elongated, which contributes to their ability to move quickly and hide in small crevices. This information aligns with the correct answer, as it captures the essential details needed to recognize a silverfish effectively.

Other options may misrepresent key features, such as incorrect sizes or colors, which could lead to confusion when identifying these pests in a practical setting. Understanding the physical characteristics of silverfish is crucial for pest control professionals, as it assists in correctly identifying and managing infestations.