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:
A. The United States should not interfere with Russian relations in Chechnya.
B. The state should increase driver's registration fees to pay for the new highway overpass.
B. The success of chimps in mastering sign language, however, indicates that they have indeed learned a simple language.
Explanation:
For the first question, A is thesis for writing a persuasive essay. A persuasive essay must convince the audience to take some sort of action. Option A is the best choice because it is trying to convince the audience that interfering in Russian relations in Chechnya would not be a good idea.
The second question has a similar requirement. The thesis statement needs to be something that is actionable. Increasing the driver's registration fees is the only action that is suggested in any of the sentences.
The last answer asks about the thesis of the passage. A thesis cannot be cited text so the first option is incorrect. Option C is not specific and doesn't actually say the main idea. This is also true of option D, it only focuses on one group of scientists rather than the bigger picture.