Which one of the following could be the artifacts in the order of their age, from first to sixth?

How many times do I have to say this? This woman instructor is bad at making these videos! Her logic is chaotic and has gaps. Mehran is much better. Pretending yall not seeing this ain't gon work! Have some dude instructor remake these videos or something. Why do I gotta have it harder to understand while someone can already explain this better??