In this English grammar question, a sentence is given in active voice. Select the option that best expresses the same idea in passive voice. Sentence: "The city will build a new bridge across the river."

Introduction / Context:

This question checks your ability to convert a future plan stated in active voice into a clear passive voice sentence. The original statement says that the city will build a new bridge across the river. The correct option must keep the same future meaning and introduce the bridge as the main focus of the sentence.

Given Data / Assumptions:

- Original sentence: "The city will build a new bridge across the river."

- Subject in the active sentence: "the city".

- Object: "a new bridge". The phrase "across the river" describes location.

- The verb phrase is in the future tense: "will build".

- We need a passive structure that continues to show a future action that has not yet happened.

Concept / Approach:

In the active sentence, the city is the doer of the action and the bridge is the receiver. To change this into passive voice, the bridge must become the subject. For simple future with "will", the passive pattern is "will be" plus the past participle of the verb, which in this case is "built". The phrase "by the city" is used to mention the agent if it is important to know who will perform the action, and the location phrase "across the river" remains attached to the verb phrase.

Step-by-Step Solution:
Step 1: Identify the subject, verb, and object in the active sentence. Subject: the city. Verb: will build. Object: a new bridge. Step 2: Move the object "a new bridge" into the subject position in the passive sentence. Step 3: Replace "will build" with the passive form "will be built". Step 4: Keep the phrase "across the river" to show where the bridge will be built. Step 5: Add the phrase "by the city" to show who will carry out the action, and then compare the resulting sentence with the options.

Verification / Alternative check:

The sentence "A new bridge will be built across the river by the city." clearly keeps the future time reference given by "will", maintains the location information, and correctly shifts the focus to the bridge. It uses the standard passive voice pattern with "will be built" and mentions the agent in a natural "by" phrase. That confirms it as the best passive transformation.

Why Other Options Are Wrong:

Some alternatives use present tense or present perfect, which changes the time of the action from future to present or completed past. Others contain grammatical errors such as "build" instead of "built" or awkward noun constructions such as "building of a new bridge is done by the city". These patterns are not the normal passive form for a simple future plan. Therefore, they fail to convey the same meaning and are not suitable answers.

Common Pitfalls:

Candidates often forget to change "will build" to "will be built" and may produce incorrect forms like "will built" or "will being built". Another frequent error is to switch the tense accidentally, which changes the entire time frame of the sentence. Some learners remove or misplace the location phrase, which leads to incomplete meaning. To avoid these problems, always check tense, word order, and key information when you convert an active sentence into a passive one.

Final Answer:

The correct passive voice sentence is "A new bridge will be built across the river by the city."