In each of the questions given below a sentence is given with three words in bold. Choose the option which gives the correct sequence of these words to make the sentence grammatically and contextually correct.
The central bank’s recent policy shift is seen as a response to (A) inflationary (B) persistent (C) pressure on the currency.

The correct answer is BAC.

Let's analyze the given sentence and the bolded words to determine the correct grammatical and contextual order:
The original sentence is: "The central bank’s recent policy shift is seen as a response to (A) inflationary (B) persistent (C) pressure on the currency."

Here, the bolded words are:
(A) inflationary (adjective)
(B) persistent (adjective)
(C) pressure (noun)

Let's evaluate the position of the words:
1. The phrase "response to" is followed by a noun phrase that functions as the object of the preposition "to".
2. In the context of currency, we talk about "inflationary pressure". Here, "pressure" is a noun, and "inflationary" is an adjective modifying it.
3. The adjective "persistent" (meaning continuing firmly or obstinately) can modify the noun phrase "inflationary pressure" to describe its ongoing nature. Thus, "persistent" should come before "inflationary".
4. This gives us the sequence: "persistent" (B) followed by "inflationary" (A) followed by "pressure" (C).
5. Placing these in order, we get: "...a response to persistent inflationary pressure on the currency." This is grammatically sound and contextually meaningful.

Therefore, the correct sequence of the letters is BAC.