The answer is 4. Precipitation. Hope this helps!
The commercial revolution which was the predecessor for the industrial revolution (which is widely known), had a major impact on daily life in general, but especially trading. The commercial revolution involved the creation of established and stable trading routes all around the world which traded in various materials (spice, silk, metals, etc.) all of this drastically affected daily life as well.
The oncoming space race and the debate/research of going and exploring to find better improvements to Homo Sapian's lifespan.
Probably B or C because if your inspecting the property you need to know what's wrong with it, maybe D too
