What type of appearance is described as 'grotesque'?

The term 'grotesque' refers to something that is bizarre, unnatural, and often distorted in appearance, which evokes a sense of discomfort or revulsion. This word is typically used to describe forms that are exaggerated, weird, or have an unsettling quality. In the context of the provided options, a grotesque appearance is best captured by the description of something as bizarre and distorted, showcasing features that deviate significantly from the norm or expected standards of beauty. This helps convey the idea that the characteristics of a grotesque appearance are not just unusual but often combine absurdity with a sense of the uncanny.