Answer:c. Rachel did not pay any attention to the beeping from her refrigerator door alarm until she realized that it meant the door was left open and the cold air was escaping. Now when she hears the door alarm she runs to the kitchen to close the refrigerator door.
Explanation:sensitization refers to one's ability to respond to a particular stumuli sensitively. We are usually sensitive to a certain stimuli because of what we have experienced before with regard to the similar or same stimuli. Rachel had ignored the same alarm before until she realizes the effect or what it meant then she is now able to respond promptly.