1) C
2) B
3) A/B not sure
4) C I think
D will be the answer I hope that help good luck I hope. My answer help you
Answer:
Changing the shape of the molecules that create fragrances in a flower or fruit may influence our perception of their smell. The reaction pattern produced, olfactory code, is sent as a signal to the brain, which which is how you smell things.
Explanation: