If one scans topics and pages of leonardo da vinci’s notebooks it becomes apparent that he

If one scans topics and pages of Leonardo da Vinci's notebooks, it becomes apparent that he kept them strictly for his own use. The correct answer is D. He never intended to actually publish those works, at least until he achieved definitive results in what he was studying. He wanted to experiment a lot and was interested in many scientific things, many of which could be found in his notes.

Domes and arches were seen as quite opulent, they're harder to make and they're also hard to understand as arches look as if they really shouldn't work. all of these factors contribute to them being used in churches along with costs to make such amazing designs