Final answer:
To limit the topic of an essay on small businesses, you can focus on specific aspects such as their impact on the local economy or their challenges in a competitive market.
Step-by-step explanation:
To effectively limit the topic of an essay on small businesses, you can consider specific aspects or characteristics related to small businesses.
For example, you could limit the topic to small businesses and their impact on the local economy, small businesses and their use of technology, or small businesses and their challenges in a competitive market.