Question

fix the one word that is used incorrectly.
\thank you for your hard work, ted,\ ms. palmer said. \the trees you
planted in my yard look beautiful, and their going to provide much - needed
shade in the summer.\

Explanation:

The word "their" is incorrect here. "Their" is a possessive pronoun, but we need the contraction "they're" (which means "they are") to fit the context of the sentence ("they are going to provide...").

Answer:

The incorrect word is "their"; it should be "they're".