Answer:
4) King Ezana
Step-by-step explanation:
According to historical records, it was King Ezana that made Christianity the official religion of Axum.
This is evident in the fact that, following his conversion to Christianity through Frumentius, King Ezana ensured that Axum employed Christianity as their official religion. This occurred around the year 349 to 356 CE.
Hence, in this case, the correct answer is "King Ezana made Christianity the official religion of Axum"