In the sentence about Katrina and Josue, what is incorrect regarding the noun "trophy"?

The choice indicating "trophy" should be changed to "trophies" is correct when the context requires talking about more than one trophy. If the sentence refers to two or more trophies, using the plural form "trophies" is necessary for grammatical correctness and clarity in meaning. This aligns with the basic rules of pluralization in English, where nouns that end in a consonant typically form their plural by adding “-ies.”

In many contexts, such as when discussing awards or achievements, it is common to reference multiple trophies if more than one is involved. Hence, ensuring that the noun reflects the correct plurality is vital for the overall coherence and accuracy of the sentence.