The Gyeongguk Daejeon, the basic code of Joseon administration, was completed under

Answer and explanation

Correct answer: A. King Seongjong

  1. Step 1: The code was completed in 1485. Answer: King Seongjong. Why not the others: King Sejong: Sejong began codification but it was not finished then. King Taejong: Taejong strengthened royal authority. King Jungjong: Jungjong reigned later.

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The Gyeongguk Daejeon, the basic code… | CSAT Suneung Joseon