In the following question on voice, the sentence is given in Active voice. Choose the option that best expresses the same idea in Passive voice: "After driving Dr. Bose to the hospital he dropped him at his guest house."

Introduction / Context:
This question checks the ability to convert a sentence from Active voice to Passive voice without changing its meaning. The original sentence describes two actions: driving Dr. Bose to the hospital and dropping him at his guest house afterwards. In the Passive voice, the focus shifts from the doer of the action to the receiver, here Dr. Bose, while the sequence of events and the tense remain the same.

Given Data / Assumptions:

• Original sentence: After driving Dr. Bose to the hospital he dropped him at his guest house.
• The subject performing the actions is an implied person referred to as he.
• The receiver of both actions is Dr. Bose.
• The actions took place in the past and the sentence uses a simple narrative style.

Concept / Approach:
To change from Active to Passive voice, the object of the Active sentence becomes the subject of the Passive sentence. In simple past tense constructions, the Passive is formed using was or were plus the past participle of the main verb. In this sentence, the verbs are driving and dropped. The Passive forms are being driven and was dropped. We also want to keep the time relationship: first he was driven to the hospital, and then he was dropped at his guest house. A concise Passive version brings Dr. Bose to the subject position and keeps the two linked actions in correct order.

Step-by-Step Solution:
Step 1: Identify the verbs and objects in the original: driving Dr. Bose to the hospital and dropped him at his guest house.
Step 2: Recognize that Dr. Bose is the receiver of both actions and should become the subject in the Passive sentence.
Step 3: Form the Passive for the first action: After being driven to the hospital.
Step 4: Form the Passive for the second action: Dr. Bose was dropped at his guest house.
Step 5: Combine these into one smooth sentence: After being driven to the hospital Dr. Bose was dropped at his guest house.

Verification / Alternative check:
The Passive sentence After being driven to the hospital Dr. Bose was dropped at his guest house clearly preserves the original meaning. It shows that someone drove Dr. Bose to the hospital first and then dropped him at his guest house. The doer of the actions is not mentioned, which is acceptable in Passive voice when the agent is unknown or unimportant. The tense remains simple past and the sequence is intact. Reading both sentences side by side shows that no essential detail has been lost or changed.

Why Other Options Are Wrong:
Option B, After he had driven Dr. Bose to the hospital he had dropped him at his guest house, is still in Active voice and unnecessarily uses the past perfect. Option C, After he was driving Dr. Bose to the hospital he was dropping him at his guest house, has incorrect aspect and suggests overlapping actions instead of a clear sequence. Option D, Dr. Bose was being driven to the hospital first and then he was being dropped at his guest house, uses the continuous passive was being, which implies ongoing actions and sounds awkward for completed events. Option E, After Dr. Bose was driven to the hospital he got dropped at his guest house, mixes a casual phrase got dropped with formal structure, and is not as precise or standard as the correct Passive form.

Common Pitfalls:
Many learners forget to change the object into the subject when forming the Passive and end up rewriting the sentence in Active voice with changed tenses. Some also overuse the continuous Passive form was being when simple was is enough. When working with two linked actions, it is important to keep the sequence clear and use parallel structures. A good method is to convert each clause separately into Passive and then join them naturally rather than trying to change everything at once.

Final Answer:
The correct Passive voice sentence is After being driven to the hospital Dr. Bose was dropped at his guest house.