Questions: The skeptics believed that we had knowledge of mathematics and the sensory world.

False

The skeptics, particularly those from the ancient Greek philosophical tradition, generally questioned the possibility of certain knowledge. Skepticism, as a philosophical approach, often involves doubting or suspending judgment about the certainty of knowledge claims.

This option would suggest that skeptics believed in certain knowledge of mathematics and the sensory world. However, this is not consistent with the core tenets of skepticism, which typically involve questioning the certainty and reliability of such knowledge.

This option aligns with the general skeptical view. Skeptics, such as Pyrrho and Sextus Empiricus, argued that our sensory perceptions and even mathematical knowledge could be subject to doubt. They believed that because our senses can deceive us and because mathematical concepts are abstract, we cannot claim to have absolute knowledge of them.