[Solved] Fedora 20 makes use of the XFree86 implementation of X Windows. Unconditioned Response: Is an automatic, natural reaction to a stimulus that occurs without prior conditioning or learning, such as salivating in response to food. Fear of Loud Noise: An instinctual or conditioned response to loud sounds, often involving feelings of anxiety or panic. Conditioned Response: A learned reaction to a previously neutral stimulus that results from repeated exposure to a stimulus paired with a response. Nude Female's Picture: An image depicting a woman without clothes, often considered in contexts ranging from art and photography to issues of privacy and consent.