Question

order the topics from broadest to narrowest. broader narrower submit how to grill meats on a barbecue how to grill a burger on a barbecue how to grill a burger medium rare

Explanation:

1. "how to grill meats on a barbecue" is the broadest, as it covers all types of grilled meats, not just burgers.
2. "how to grill a burger on a barbecue" is narrower, focusing specifically on burgers rather than all meats.
3. "how to grill a burger medium rare" is the narrowest, as it adds a specific doneness requirement to the burger grilling topic.

Answer:

1. (Broadest) how to grill meats on a barbecue
2. how to grill a burger on a barbecue
3. (Narrowest) how to grill a burger medium rare