The environment in this school is conducive ........................ learning.

Correct option is C

"Conducive to" is the correct collocation. The preposition "to" follows "conducive" to describe conditions that promote or enable a particular outcome, such as learning.
Information Booster:
1. "Conducive to" indicates a supportive or favorable relationship.
2. Commonly used in academic, formal, and descriptive contexts.
3. Accurate preposition ensures grammatical correctness.
4. The choice reflects proper idiomatic usage.
Additional Information:
· (a) of: Incorrect as "of" doesn’t connect to an action.
· (b) for: Suggests purpose but lacks proper idiomatic connection.
· (d) with: Implies accompaniment, not suitability.