Which of the following phrases given below the sentence should replace the phrase printed in bold letters to make the sentence grammatically correct? Choose the best option among the five given alternatives that reflect the correct use of phrase in the context of the grammatically correct sentence. If the sentence is correct as it is, mark “No correction required” as the answer.

The minister did not specify why was the policy reversed despite public support.

The correct option is why the policy was.

Detailed Explanation:
The sentence contains an indirect question (a noun clause acting as the object of the verb "specify") introduced by the question word "why".
In English grammar, a direct question uses inverted word order where the auxiliary verb comes before the subject (e.g., "Why was the policy reversed?").
However, when a question is embedded within a larger statement (an indirect or reported question), it must follow the standard declarative word order where the subject comes before the verb (subject + verb structure).

Applying this rule:
- Incorrect (Interrogative order): "...why was (verb) the policy (subject) reversed..."
- Correct (Declarative order): "...why the policy (subject) was (verb) reversed..."

Let us evaluate the choices:
- "why did the policy": Incorrect because it maintains an interrogative structure by placing the auxiliary verb "did" before the subject.
- "the reason for which": Incorrect because it leads to an incomplete passive construction ("the reason for which the policy reversed").
- "that why the policy": Incorrect because using both "that" and "why" together is redundant.
- "why the policy was": Correct because it uses the proper subject-verb order ("the policy was").

Therefore, the grammatically correct sentence is: "The minister did not specify why the policy was reversed despite public support."