The answer is b please give brainiest
They are referring to when Dr. Rank performed medical tests to see if he was dying or not.
I had the most wonderful day ever. First and foremost, I awoke. After then, I received a parcel in the mail. It was opened by me. It was the best present I'd ever received. After that, my aunt arrived with a birthday cake and party favours. All of my pals showed there, and we had a great time. This is a day I'll never forget.
The balloon popped is the sentence therefore C is correct