Select the most appropriate option that can substitute the highlighted words in the given sentence.
Ranjith failed in all his exams as he had been addicted of social media.

Correct option is D

The correct substitution of the highlighted words is "as he had been addicted to."
Explanation:
· The verb "addicted" is always followed by the preposition "to."
· Correct usage: "addicted to" (NOT addicted of, on, at, or in).
Grammatical rule used:
· Certain adjectives (e.g., addicted, committed, dedicated) are always followed by "to" when referring to a habit or attachment.
Example: He is addicted to coffee and cannot start his day without it.
Why other options are incorrect?
(a) "addicted at" → "At" is used for location or position, not addiction.
(b) "addicted on" → "On" is used for surfaces, not addiction.
(c) "addicted in" → "In" is used for enclosed places, not addiction.