A) On
B) At
C) with
D) in
🧠 Explanation:
“He went in the direction of the post office” uses correct preposition. For English students, this highlights grammar, a key topic in linguistic clarity, communication, and writing. Prepositions ensure precision. Understanding this improves sentence structure. It’s essential for mastering grammar. Studying prepositions offers insights into language accuracy, crucial for English and communication.