I think its c. assumption but i am not sure if this answer is correct or wrong.
I think it means Heart/Lungs.
Cardio = Heart
Respiratory= Lungs
D. The incentive approach and then the drive-reduction approach
Answer:
Canning. The food is heated to a high temperature.
Fermentation. The breakdown of sugars by bacteria, yeasts or other microorganisms under anaerobic conditions.
Freezing
Explanation: