Step 1: Understanding the Concept:
This sentence involves a ``reporting verb'' (expect) followed by a noun clause introduced by ``that.''
In English, there are two primary ways to make such sentences passive:
1. Impersonal Passive: Using a dummy subject ``It'' (e.g., ``It is expected that...'').
2. Personal Passive: Using the subject of the noun clause as the new subject (e.g., ``The project is expected to be...'').
The question asks for the most accurate transformation. The impersonal passive is highly standard in formal writing and exam contexts when the agent ``We'' is generic or unimportant.
Step 2: Detailed Explanation:
Let's break the transformation down step-by-step:
1. Main Clause (Active): ``We expect...'' (Simple Present Tense).
- Rule: It + is/are + V3 of reporting verb.
- Result: ``It is expected...''
2. The ``That'' Clause: ``...that the committee will approve the project...''
- This clause is in the Future Tense (will + verb).
- Passive Rule: Object + will + be + V3 + by + Agent.
- Result: ``...that the project will be approved by the committee...''
3. Critique of Options:
- Option (A) correctly applies both the impersonal passive to the main verb and the standard passive to the subordinate clause.
- Option (B) uses a perfect infinitive (``to have approved''). This is incorrect because the action is expected to happen in the future, whereas ``to have approved'' implies a completed past action relative to the expectation.
- Option (C) is a nominalization (changing verbs to nouns like ``Approval''). This is a stylistic paraphrase, not a grammatical voice conversion.
- Option (D) is a structural disaster; it uses a gerund ``is expecting'' which makes the entire clause the subject of a continuous action, which makes no sense.
Step 3: Final Answer:
Option (A) is the only structurally sound and tensed-aligned passive conversion of the provided active sentence.