Answer:
I think that's a very *sensible* idea. My teeth are very *sensitive* to cold.
Step-by-step explanation:
Sensible means practical, so you would basically be saying "that's a practical idea," or "that's a good idea." Sensitive means they are delicate. Therefore, this person is saying their teeth are delicate and fragile when it comes to eating cold things, and it might hurt them because of this.
Have a lovely day!! :) Hope I could help a little!