In our English exam, we have a question called "error correction" where we get a paragraph that has a grammatical error on each line. We're required to point out the error and then substitute it for the correct word.
Here's the line:
The smallest things could make him really upset or give him the intense reaction.
(It's about a king who can't control his emotions.)
Everyone in our class wrote that "the" is the incorrect word, with "an" being the right word in its place. However, our English teacher says that the incorrect word is "or". I didn't stick around to ask her what she thought the right word to substitute it was.
I would truly appreciate it if you validated our answers and explained why it would be so.