Final answer:
OH- is the strong small base because a strong base is characterized by being 100% ionized in solution, and all strong bases are OH compounds.
Step-by-step explanation:
Among the bases listed, the one that is a strong small base is: 1) OH-. This is because a strong base is a base that is 100% ionized in solution. According to multiple sources, all strong bases are OH compounds, meaning they contain the hydroxide ion (OH-). Therefore, hydroxide, OH-, as a hydroxide compound, represents a strong base. In contrast, OCH3- (methoxide) and EtO- (ethoxide) are examples of weaker bases because they do not consist solely of hydroxide ions, and they are not completely ionized in solution.