Sentence examples for that decision from inspiring English sources

"that decision" is a correct and usable part of a sentence in written English.
It is commonly used to refer to a specific decision that has been previously mentioned or is well-known to both the speaker and the listener. Example: "I am grateful for that decision you made last week. It really helped to improve the team's performance." In this sentence, "that decision" refers to a specific decision that was made last week, and the speaker is expressing gratitude for it.