Which statement best expresses the poster's main message about bonds and national safety?

• A. Americans should buy victory bonds to help women and children.
• B. Americans should buy victory bonds to prevent our enemies from harming the nation.
• C. Buying bonds keeps US ships and supplies out of Germany and Japan's hands.
• D. Americans should buy victory bonds to support local businesses.

Answer: (B)

The main idea tested is how a wartime poster ties people’s financial support to the country’s safety. Victory bonds are framed as a way for ordinary citizens to contribute to the war effort, supplying the funds that help defend the nation and deter enemies. The statement that best reflects this is the one urging Americans to buy victory bonds to prevent our enemies from harming the nation because it directly links financial support to national safety and security.

The other messages touch on related ideas—helping vulnerable groups, supporting local businesses, or describing a general danger to ships and supplies—but they don’t state the central purpose as clearly. The strongest emphasis in a poster about bonds and safety is funding the war to prevent harm by adversaries, which is exactly what this choice conveys.