Select the most appropriate option to fill in the blank.
Computers would replace the ______________ technique of creating an image on paper, transferring it to transparent cells and again onto film.

Correct option is D

The correct word to fill in the blank is archaic.
· Explanation: The sentence refers to an old and outdated method. “Archaic” means ancient or outdated, which fits contextually.
· Grammatical rule used: Adjective usage – "Archaic" is used as an attributive adjective describing the "technique".
· Example: The archaic language of the play made it hard to understand.
Meanings of other options:
· (a) assuage – To relieve or soothe. (शांत करना)
· (b) austere – Severe or strict in manner. (कठोर)
· (c) audacious – Fearless and daring. (साहसी)