A.) Setting an inflated balloon on fire
Let's look at the options and see what's different.
A.) Setting an inflated balloon on fire
* This is a chemical reaction and you won't have a balloon after it's over.
B.) Stretching a balloon before blowing air into it
* You're doing a physical manipulation of the balloon and at the end, you still have a balloon.
C.)Deflating a balloon by releasing all the air present in it
* This is another physical manipulation and still leaves you with a balloon.
D.) Twisting a long balloon to change its shape to form a flower
* Just because you've twisted a balloon doesn't mean it's no longer a balloon.
So of the 4 choices, 1 of them destroys the balloon and leaves you with something other than a balloon. The other 3 actions physically manipulate the balloon, but in the grand scheme of things, still leaves you with a balloon at the end. So the correct option is "A".
