Answer:
D. The systems draw on both the arts and natural science.
Explanation:
According to the passage, systems of philosophy retain a certain relative validity because they draw on both the arts and natural science as they are not solely dependent on either the facts and theories of natural science or the classical approach to art but use both aspects well.
Answer: B, I Agree.
For my parents the do not understand as much. I think they should understand because they probably went through the same thing as teenagers.
There are a few words that could work here, but a common one is "respectable". If something or someone is respectable they are worthy of attention. There are other words as well.