Correct Answer:
Option D —
Fashion
Explanation:
"In vogue" is an idiom meaning popular, trendy, or currently in fashion.
Replacing "vogue" with fashion maintains the original meaning of the sentence ("Narcotic drug addiction is in fashion these days...").
Definitions of Other Options:
Demand: A strong request or requirement for something.
Obscurity: The condition of being unknown, unclear, or hidden.
Standard: An established level of quality, norm, or requirement.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.