Select the correct Active/Passive form of the given sentence.

The doctor said to the Rani, “Your son will be discharged very soon.”

The doctor told Rani that her son would be discharged very soon.

The correct active/passive form of the given sentence is The doctor told Rani that her son would be discharged very soon.

The sentence is in the simple future tense, which is used to describe an action that will happen in the future. The active voice of the sentence is formed by putting the subject of the sentence before the verb and removing the word "by." In this case, the subject of the sentence is "doctor" and the verb is "tell." So, the active form of the sentence is "The doctor told Rani that her son would be discharged very soon."

The other options are incorrect because:

• The doctor asked Rani that her son would be discharged very soon.” This is incorrect because the verb "asked" is used to make a request, not to give a statement.
• The doctor asked Rani that her son will be discharged very soon.” This is incorrect because the verb "will" is in the future tense, but the sentence is about an action that is happening now.
• The doctor told Rani that her son would have been discharged very soon.” This is incorrect because the verb "would have been" is in the past perfect tense, which is used to describe an action that happened in the past and is still relevant to the present. The sentence is about an action that is happening now.