In the sentence about city recycling, which word best completes the blank: How often does city recycling () usually take place?

• A. Collection
• B. Process
• C. Service
• D. Schedule

Answer: (B)

The question tests choosing a noun that naturally pairs with “take place” to refer to the ongoing operation, not a single event. “Recycling process” fits because it denotes the entire sequence of steps involved in recycling in the city, an activity that can be described as occurring or taking place over time. Saying “How often does city recycling process usually take place?” sounds like you’re asking about the frequency of the overall set of actions from collection to processing, which is what you mean by the word process.

The other options don’t fit as smoothly. “City recycling collection” would refer to a specific collection event or activity and isn’t the usual way to talk about how often the overall recycling cycle happens. “Recycling service” suggests a service offered rather than the continuous operation. “Schedule” would refer to a plan or timetable, not the actual operation that occurs.