In this English grammar question on voice, a sentence is given in the active voice about writing a poem every day. Out of the four alternatives, select the option that best expresses the same idea in the passive voice: He writes a poem everyday for her.

Introduction / Context:
This question again tests your ability to transform an active simple present sentence into passive voice. The original sentence states that he writes a poem every day for her, which is a regular, repeated action. In the passive version, the focus should move to the poem while keeping the sense of daily repetition. Choosing the correct option requires you to maintain the tense and meaning while applying the correct passive structure.

Given Data / Assumptions:

• The verb "writes" is in the simple present tense.
• The subject is "he".
• The object is "a poem", and there is an indirect object phrase "for her".
• The adverb "everyday" (functioning as "every day") shows frequency.
• The passive form must keep the idea of daily repetition and the relationship between the two people.

Concept / Approach:
For simple present tense, the passive structure is "is / are + past participle". The object "a poem" becomes the subject in the passive sentence. The original subject "he" can be introduced at the end with "by him" if we wish to mention the doer. The frequency adverb "everyday" can appear at the end of the sentence without changing the meaning. The core idea that one poem is written daily for her must remain the same after conversion.

Step-by-Step Solution:
First, identify "a poem" as the object that will become the subject in the passive sentence. Second, observe that the tense is simple present, so the appropriate auxiliary is "is" because "poem" is singular. Third, form the passive verb phrase "is written" with the past participle of "write". Fourth, add "by him" after the verb phrase to show who performs the action, and keep the phrase "for her". Fifth, place "everyday" at the end to show that this action happens regularly.

Verification / Alternative check:
The sentence "A poem is written by him for her everyday" correctly shows that one poem is written each day, with the focus now on the poem itself. The tense is still simple present, and the agent "him" and the beneficiary "her" are clearly indicated. When read aloud, the sentence sounds natural and accurately reflects the meaning of the original active sentence. This confirms that the transformation is correct.

Why Other Options Are Wrong:
Option A uses an unnecessary nominal expression "writing of a poem" and present perfect, which changes the tense and style. Option B is simply another active sentence in the present perfect tense and does not show passive voice. Option D also remains in the active voice and changes the verb to present perfect. None of these options follow the standard passive structure for simple present tense. Only option C uses "A poem is written by him for her everyday", which is the correct passive form.

Common Pitfalls:
Students sometimes confuse simple present passive with present perfect or continuous tenses, especially when they see adverbs like "everyday". Another common issue is to forget that the object must become the subject in the passive sentence and instead try to leave the subject unchanged. Some learners also add unnecessary expressions such as "has been done", which make the sentence more complex without improving meaning. A reliable method is to first locate the object and then build the passive structure "is / are + past participle" around it, checking that the tense and sense remain the same.

Final Answer:
The option that correctly expresses the sentence in the passive voice is: A poem is written by him for her everyday.