D. Child and Family but I’m not %100 sure
The best and most correct answer among the choices provided by the question is the third choice "call 911"
Tachycardia = Too fast. A heart rate of more than 100 beats per minute<span>(BPM) in adults is called tachycardia. What's too fast for you may depend on your age and physical condition.</span>
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Answer: The sense of taste and smell are related to each other, hence Cosmo's sense of taste is altered because of his stuffy nose.
Explanation:
It is common to feel like you can't taste food when sick, because the sense of smell and taste are related to each other.
Smell essentially influences our ability to taste food, which is why distinguishing flavors with a cold (or stuffy nose) is hard sometimes.
When drinking coffee, the aroma of the coffee travels through the nasal area. There, the hair cells carry the odour related information to the brain. But Cosmo's nose is stuffed to the point that he can't smell anything, so due to the mucus in his nose, he is unable to smell the odour, hence his brain is not able to tell him anything about the flavour of the coffee. As a result, he thinks it has no taste.