Final answer:
In the sentence provided, the word 'easily' is the adverb because it modifies the verb 'corrected,' describing how a hearing problem isn't as simple to fix as a skinned knee. 'Problem' and 'knee' are nouns, and 'hearing' is an adjective in this context.
Step-by-step explanation:
The question you've asked is about identifying the adverb in the following sentence: 'After all, a hearing problem isn't as easily corrected as a skinned knee.' In this sentence, the word 'easily' is the adverb, because it modifies the verb 'corrected,' providing more information about how the action is being done. Adverbs often modify verbs, adjectives, or other adverbs and can provide details about manner, place, time, frequency, degree, or cause.
The other options provided, 'problem' and 'knee,' are nouns, and 'hearing' functions as an adjective modifying the noun 'problem.' Hence, neither 'problem' nor 'knee' nor 'hearing' could be classified as an adverb within the context of this sentence.
It is important to recognize parts of speech to understand and construct sentences effectively. For example, 'hearing' is related to your ability to perceive sounds, and it can be used to highlight how certain words, like 'hear' and 'here,' sound similar but have different meanings and spellings—this distinction emphasizes the importance of phonetics and spelling in English.