Answer:
1-detail, 2-detail, 3-main idea.
Explanation:
Sheep produce two crops a year: lambs and wool. (choose)
This is also a detail.
Sheep eat a variety of plants. (choose)
This is a detail, because it shows how it can be a detail of the main idea.
Advantages can be cited for raising sheep rather than other livestock animals. (choose)
This is the main idea, because it describes what the topic of the other details are.
Hope this helps!