Explanation:

- Given Word: Putrefy

- Meaning: To decay or rot, typically associated with organic matter breaking down.

- Option 1: Destroy

- Meaning: To cause something to not exist or to be ruined.

- Antonym: Not suitable as an opposite of "putrefy."

- Option 2: Combine

- Meaning: To bring things together or unify.

- Relationship: Related to merging rather than decomposition.

- Option 3: Decompose

- Meaning: To break down into simpler parts, similar to putrefying.

- Relationship: Synonymous, not an antonym.

- Option 4: Contaminate

- Meaning: To make something impure by exposure to something harmful.

- Relationship: Not directly an antonym to putrefy.

- Correct Answer:

- The correct antonym is to prevent decay or enhance purity. The most suitable word aligned with the opposite meaning of putrefy is "preserve," a word not listed but closest to imply combining.

- Correct Answer: Combine