Which of the following styles has the lowest level of perceived bitterness?

Wee Heavy is characterized by its rich, malty sweetness with lower levels of perceived bitterness compared to the other styles listed. This Scottish ale typically features a higher malt backbone, which gives it a toasty, caramel flavor profile and a full body. The emphasis on malt over hops means that the bitterness derived from the hops is less pronounced, resulting in a smoother and sweeter finish.

In contrast, styles like American IPA and American Pale Ale are known for their hop-forward characteristics, which contribute significant bitterness as well as floral, citrus, and resinous flavors. Czech Premium Pale Lager, while being more balanced than the IPAs, still has a level of bitterness associated with its hop content, which is intended to complement the clean malt flavors. Therefore, Wee Heavy stands out as the style with the lowest perceived bitterness due to its dominant malt character and subdued hop presence.