Question

How did sages likely pass on their wisdom from one generation to another?

through social media
through written documents
through oral communication
through video recordings
through laws passed by the government

Answer 1

through oral communication

Sages traditionally taught by speaking — storytelling, lectures, mentorship, debate and recitation — which allowed ideas to be passed generation to generation. (In many cultures those oral teachings were later committed to writing, but oral transmission was the primary method historically.)