The View That Knowledge Is Not Based on Irrefutable Observable

Multiple Choice

The view that knowledge is not based on irrefutable observable grounds,that it is always somewhat speculative,but that science can provide some solid ground for these speculations is known as

A) an empiricist view of science
B) an optimist view of science
C) a positivist view of science
D) a post-positivist view of science
E) both empiricist and positivist views of science