Which detail in the section "Determining The Chain Reaction" BEST supports the conclusion that cutting into an onion changes the structure of chemicals in the onion? A The structure of any molecule shows the position of the different atoms that make it up. That structure also shows how the different atoms join together.

B He knew that LF must start off as a different molecule. That's because it only caused tearing of the eyes once the onion's skin was broken.

C Sometimes chemical reactions need a little help to get started, which is where enzymes come in. "Enzymes are amazing molecules. he explains.

D Later, in the early 2000s, scientists at a Japanese food company discovered a second important enzyme in onions​