Select the option that expresses the given sentence in passive voice.

The finance minister will announce the budget.

The budget will be announced by the finance minister.

The correct passive voice of the given sentence is The budget will be announced by the finance minister.

The active voice of the sentence is The finance minister will announce the budget. This sentence is in the simple future tense, which is used to describe an action that will happen in the future. The passive voice of the sentence is formed by putting the subject of the active sentence after the verb "to be" and the future participle of the main verb. In this case, the subject of the active sentence is "the finance minister" and the main verb is "announce." The future participle of "announce" is "announced." So, the passive form of the sentence is The budget will be announced by the finance minister.

The other options are incorrect because:

• The budget will have announced by the finance minister. is in the future perfect tense, which is used to describe an action that will have happened in the future before another action happens. The action of announcing the budget is not something that will have happened before another action happens.
• The budget were announced by the finance minister. is in the past plural form. The original sentence is in the simple future tense.
• The budget are announced by the finance minister. is in the present plural form. The original sentence is in the simple future tense.