31. Which word in the following sentence is grammatically incorrect? Dr. Jones, whom all the patients like, plays the piano well.

Answer: A

Explanation:

Whom is grammatically incorrect.

In the sentence "Dr. Jones, whom all the patients like, plays the piano well," the word "whom" is incorrectly used as it is serving as the object of the verb "like." The correct form should be "who" since "who" is the subject of the clause.

A) Whom

"Whom" is used incorrectly in this context because it functions as an object, while the subject form "who" should be used instead. In the phrase "all the patients like," the patients are the subjects performing the action, making "who" the appropriate choice.

B) Well

The word "well" is grammatically correct in this sentence as it serves as an adverb modifying the verb "plays." There is no error in its usage, as it accurately describes how Dr. Jones plays the piano.

C) Plays

The verb "plays" is correctly used in the present tense to indicate that Dr. Jones engages in playing the piano. There are no grammatical issues with the verb form in this context.

D) Like

The word "like" is also correct as it appropriately describes the action of the patients towards Dr. Jones. The verb is correctly conjugated in accordance with the subject "all the patients."

Conclusion

The word "whom" is definitively incorrect in this sentence because it fails to agree with its grammatical role as the subject of the clause. All other options—"well," "plays," and "like"—are used correctly and adhere to the grammatical rules of the sentence. Thus, "whom" is the only erroneous choice.