Explanation:

- ABANDON means to leave behind or give up something completely.

- Abhor means to regard with disgust or hatred. It doesn’t relate to leaving or staying.

- Agree means to have the same opinion or to consent. It isn't related to abandoning or supporting.

- Abolish means to formally put an end to a system, practice, or institution, not related to abandonment in terms of opposites.

- Support means to uphold or take care of something, which is the opposite of abandoning. You are maintaining a connection rather than leaving it behind.

- Support is indeed the correct antonym for abandon because it involves staying with or upholding something rather than letting it go.

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