The correct answer is: between.
Voice is a grammatical category that indicates the relationship between the subject of a sentence and the action or state expressed by the verb. In English, there are two voices: active and passive.
In the active voice, the subject performs the action expressed by the verb. For example, in the sentence “The dog ate the bone,” the dog is the subject and the action is eating.
In the passive voice, the subject receives the action expressed by the verb. For example, in the sentence “The bone was eaten by the dog,” the bone is the subject and the action is being eaten.
The choice of voice can affect the meaning of a sentence. In the active voice, the focus is on the subject and the action. In the passive voice, the focus is on the action and the receiver of the action.
The answer to the question “In English, voice expresses the relationship . . . . . . . . the subject to the verb” is “between.” This is because voice indicates the relationship between the subject and the verb. In the active voice, the subject performs the action expressed by the verb. In the passive voice, the subject receives the action expressed by the verb.
The other options are incorrect because they do not accurately describe the relationship between the subject and the verb. Option A, “at,” is incorrect because it suggests that the subject is located at the verb. Option B, “of,” is incorrect because it suggests that the subject is a part of the verb. Option C, “to,” is incorrect because it suggests that the subject is moving towards the verb. Option D, “in,” is incorrect because it suggests that the subject is contained within the verb.