A potassium ion (K+) would most likely bond with

Option A - clear, distinct horizons with organic matter and mineral nutrients

Explanation:

Horizons are the specific layers of soil. Usually the topsoil,then below is the subsoil down to the rocky layers beneath.

Organic matter refers to the dead and decaying materials present; it must not be in excess as the heat of its decomposition could affect the root hairs

Mineral nutrients such as phosphorus, zinc etc, are mainly MICRO NUTRIENTS (required in trace amounts) for optimal yield of crops.

Therefore, the soil most suitable for farming should have clear, distinct horizons with organic matter and mineral nutrients.