Directions: In the sentence given below, four words are printed in bold and numbered (1), (2), (3), and (4). These words may or may not be placed in their correct positions. Select the option that indicates the correct pair of words that should be swapped to make the sentence grammatically correct and contextually meaningful.

The Ministry of Water Resources has launched a public awareness (1) campaign to promote the consumption (2) use of groundwater and prevent excessive sustainable (3) in agricultural regions (4).

The correct answer is Only 2 and 3.

Step-by-step explanation:
1. Analyze the original sentence:
"The Ministry of Water Resources has launched a public awareness (1) campaign to promote the consumption (2) use of groundwater and prevent excessive sustainable (3) in agricultural regions (4)."

2. Evaluate word placements:
- awareness (1): Placed correctly to form the phrase "public awareness campaign".
- consumption (2): Placed before the noun "use", where an adjective is needed to describe the type of use.
- sustainable (3): Placed after the adjective "excessive", where a noun is required to act as the object of the verb "prevent".
- regions (4): Placed correctly in "agricultural regions".

3. Swap words (2) and (3):
By swapping consumption (2) with sustainable (3), the sentence becomes:
"The Ministry of Water Resources has launched a public awareness (1) campaign to promote the sustainable (2) use of groundwater and prevent excessive consumption (3) in agricultural regions (4)."

4. Conclusion:
The swapped sentence makes complete grammatical and contextual sense. Therefore, the correct pair of words to swap is Only 2 and 3.