In a partnership, which of the following does not belong to the common fund if the partners agreed that future property shall belong to the partnership?

The concept of a common fund in partnership law refers to the collective assets and resources that partners contribute to the partnership for its business operations and purposes. When partners agree that future property shall belong to the partnership, it typically refers to property that is acquired or generated in the course of the partnership's business activities.

The choice that does not align with this definition is vacant land. Although vacant land can potentially be a future asset, it must be directly related to the partnership's business activities or acquired for partnership use to belong to the common fund. If the land is not being utilized by the partnership in its operations or was not specifically intended for partnership purposes, it would not automatically be included in the common fund.

In contrast, the other choices—like fishponds, rental income, and apartments—could easily be considered part of the common fund because they represent either properties that generate income or are directly used in conducting the partnership's business. These assets have a clear connection to business operations, which makes them relevant to the partnership's common fund.

Thus, vacant land stands out as it lacks a direct correlation to the partnership's business unless it is actively utilized or designated for partnership-related operations.