Question

conservation and recycling were profitable for communities and organizations. considered a patriotic duty. used to earn extra money to buy war bonds.

Explanation:

To solve this, we analyze the context of conservation and recycling during wartime (likely). Let's evaluate each option:

• "profitable for communities and organizations": Conservation/recycling in wartime was more about supporting the war effort, not profit. Eliminate.
• "considered a patriotic duty": During wars (e.g., WWII), conservation (of materials like metal, rubber) and recycling were promoted as a patriotic act to support the military. This fits.
• "used to earn extra money to buy war bonds": While buying war bonds was patriotic, conservation/recycling itself was not primarily to earn money for bonds—rather, to supply war materials. Eliminate.

Answer:

considered a patriotic duty