Explanation:

- The sentence discusses a year when a flood occurred, which implies that the correct word should describe the nature of the flood.

- Option 1: ravage

- "Ravage" is a verb meaning to cause severe and extensive damage.

- Incorrect as it doesn’t fit grammatically (needs participle form).

- Option 2: devastating

- "Devastating" is an adjective describing something that causes great destruction or damage.

- Fits the context of describing the impact of the flood.

- Correct Answer

- Option 3: salubrious

- "Salubrious" means health-giving or pleasant.

- This is not relevant to the context of a flood.

- Option 4: ameliorative

- "Ameliorative" means having the quality of making something better or less severe.

- Does not make sense in the context of flooding.