Final answer:
The words 'if it is too windy' make up the dependent clause in the sentence, with 'if' acting as the subordinating conjunction making the clause dependent.
Step-by-step explanation:
The dependent clause in the sentence 'Katniss Everdeen can't fly her kite if it is too windy' is highlighted as follows: if it is too windy. This clause is considered dependent because it cannot stand on its own as a complete sentence and relies on the rest of the sentence to provide a complete thought.
The words 'if it is too windy' make up the dependent clause and 'if' is recognized as a subordinating conjunction, which introduces the clause and indicates its dependency on the main clause.