Skepticism is a philosophical position that claims A. only sense data leads to knowledge.
B. reality is mental.
C. ideas are physical.
D. genuine knowledge does not exist.

D. genuine knowledge does not exist.

Philosophical scepticism begins with the claim that one currently lacks knowledge. Scepticism can be classified according to its scope. Agrippa scepticism focuses on justification rather than the possibility of doubt. According to this view, none of the ways in which one might attempt to justify a claim is adequate.

Hope that helps!

what is it about and how can I play it?