Spot the correct spelling of a microchip printing method.

Correct option is A

Option (a) is correctly spelt word.
Correct spelling is: “Photolithography” — a manufacturing process used to transfer circuit patterns onto a substrate (like silicon wafers) using light and a photosensitive material. (Hindi meaning: प्रकाश-आधारित लिथोग्राफी प्रक्रिया)
Example: Modern processors are fabricated using advanced photolithography techniques.