Which adjective describes something that can be maintained or kept going?

• A. Sustainable
• B. Temporary
• C. Fragile
• D. Expensive

Answer: (A)

The main idea here is describing something that can be kept going over time without exhausting resources or causing undue harm. That quality is described as sustainable. When something is sustainable, it means you can maintain it for the long term, using resources at a rate that can be replenished or endured.

Temporary describes something with a short duration, so it isn’t meant to be kept going long-term. Fragile suggests weakness or a tendency to break, which makes ongoing maintenance questionable. Expensive refers to cost, not whether something can be maintained over time.