Explanation:

- *Money measurement concept:* This principle states that only transactions that can be measured in monetary terms are recorded. It assumes the value of money is constant over time.

- Option 1: Remain constant: This is the traditional view, suggesting stability. It simplifies accounting by ignoring inflation or deflation.

- Option 2: Fluctuate: Reflects real-world scenarios where money value changes due to inflation or deflation.

- Option 3: Decrease: Assumes value drops over time, relating to inflation impact.

- Option 4: Go Up: Implies an increase in value, opposite of common inflation effects.