Select the correct passive form of the given sentence. My father cooks breakfast every day.

Breakfast is cooked every day by my father.

The correct passive form of the given sentence is Breakfast is cooked every day by my father.

The active voice of the sentence is My father cooks breakfast every day. This sentence is in the simple present tense, which is used to describe an action that happens regularly or always happens. The passive voice of the sentence is formed by putting the subject of the active sentence after the verb "to be" and the past participle of the main verb. In this case, the subject of the active sentence is "breakfast" and the main verb is "cook." The past participle of "cook" is "cooked." So, the passive form of the sentence is Breakfast is cooked every day by my father.

The other options are incorrect because:

• Breakfast was being cooked every day by my father. is in the present progressive tense, which is used to describe an action that is happening now but is not finished. The action of cooking breakfast is something that happens regularly, so the present progressive tense is not appropriate.
• Breakfast was cooked every day by my father. is in the simple past tense, while the original sentence is in the simple present tense.
• Breakfast is being cooked every day by my father. is also in the present progressive tense, which is not appropriate for this sentence.