Option 1 is the correct answer. When a ray of light enters a glass prism, it undergoes refraction. Refraction is the bending of light as it passes from one medium to another. In this case, the ray of light enters the prism and bends towards the base of the prism. It then hits the base of the prism and undergoes total internal reflection, where it reflects back into the prism. Finally, it exits the prism and continues on its path.

Option 2 does not correctly show the path of the ray of light through the prism. It shows the ray of light passing straight through the prism without undergoing any refraction or reflection.

Option 3 does not correctly show the path of the ray of light through the prism. It shows the ray of light bending away from the base of the prism instead of towards it.

Option 4 does not correctly show the path of the ray of light through the prism. It shows the ray of light bending towards the prism, but it does not show the ray exiting the prism and continuing on its path.

Therefore, option 1 is the correct choice as it accurately represents the path of the ray of light through a glass prism.