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

The company’s board of directors will announce the financial results at the annual meeting tomorrow.

To convert a sentence from the active voice to the passive voice, we follow these steps:

Step 1: Identify the key components of the active sentence.
- Subject: The company’s board of directors
- Verb: will announce (Simple Future tense)
- Object: the financial results
- Adverbial phrase: at the annual meeting tomorrow

Step 2: Swap the roles of the Subject and Object.
In the passive voice, the object of the active sentence ("the financial results") becomes the new subject of the passive sentence.

Step 3: Modify the verb structure to match the passive voice.
The active sentence is in the simple future tense ("will" + base verb). The passive voice construction for the simple future tense is:
will + be + past participle of the main verb
Applying this structure:
"will announce" becomes "will be announced".

Step 4: Place the original subject at the end, introduced by "by".
"by the company's board of directors"

Step 5: Combine all elements, keeping the adverbial details intact.
Combining these parts, we get:
"The financial results will be announced by the company's board of directors at the annual meeting tomorrow."

Therefore, this matches the correct option.