The correct option is C : K+-coupled. Solute transport can occur either along or against the concentration gradient.
There are two forms of transport that occur in living organisms: active transport and passive transport. Passive travel does not require energy for transportation, but active transport does.
The K+ linked transport does not require any energy molecules and is simply transferred across the leaky channel. As a result, K+-coupled transport is not a common active transport. Substances travel against the concentration gradient during active transport, from a low concentration location to a high concentration area.
As a result, option C is the correct answer.
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