What term describes the incoming or spread of something usually hurtful?

• A. Surplus
• B. Invasion
• C. Beneficiary
• D. Ally

Answer: (B)

Invasion is the act of moving into or spreading across a place, often with harmful intent or effect. It fits here because it captures both the idea of something coming in and expanding its reach, especially when that thing causes damage or disruption—like invasive species entering a new habitat, a disease invading a population, or troops invading an area. The other terms don’t fit this sense: surplus means an extra amount, a beneficiary is someone who gains, and an ally is a supportive partner. So invasion best describes the incoming or spread of something usually hurtful.