"In-law" is the correct answer because it refers to a person who is related to someone by marriage, rather than by blood. The other options, "godchild" and "stepchild," do not accurately describe the relationship between "pariente politico" and the given words. A godchild is a person who is sponsored by a godparent in a religious ceremony, while a stepchild is a child from a previous relationship of one's spouse. Therefore, "in-law" is the most appropriate term to describe the relationship indicated by "pariente politico."