Question

select the appositive or appositive phrase. the largest eggs in the world are those of ostriches, the worlds largest living birds.

Explanation:

An appositive is a noun or noun - phrase that renames another noun right beside it. In the sentence "The largest eggs in the world are those of ostriches, the world's largest living birds", "the world's largest living birds" renames "ostriches".

Answer:

the world's largest living birds