[Solved] Oscar Lewis was the first to suggest that, because they are excluded from mainstream social life, the poor develop a way of life with fundamentally different values and goals, which makes it much less likely that they will ever join the middle class. This way of life is usually called: A) the culture of poverty. B) the invisibility of poverty. C) the social contract. D) residential segregation. E) oppression norms. Valsalva Maneuver: A technique where one attempts to exhale forcefully with a closed mouth and pinched nose, used in medical examinations. Occult Blood: Blood present in such small quantities that it is not visible to the naked eye, often detected through specific tests. External Sphincter: A circular muscle that helps to control the passage of substances out of a body cavity or organ, such as the anus or urethra. Anal Area: The region surrounding the anus, which is the external opening of the rectum, important in the defecation process and subject to various medical conditions.