Option 1: Combining activities into one phrase
* We stopped to use the bathroom, stretch, and eat dinner. (This makes it clear that these were three separate but related actions.)
Option 2: Emphasizing the order of activities
* We stopped to use the bathroom, then stretched and ate dinner. (This clarifies the sequence of events.)
Option 3: Focus on one activity
* We stopped to eat dinner. (This highlights the primary reason for stopping.)
Option 4: Using a different verb for "stretch"
* We stopped to use the bathroom, take a break, and eat dinner. (This avoids the awkwardness of "stretch" in this context.)
The best correction depends on the specific context and the intended meaning of the sentence.