Which of the following is an example of a non-lapsing ability?

A non-lapsing ability is defined as an ability that continues to have an ongoing effect without needing to be reactivated or triggered again after its initial resolution. In this context, adding a charge counter at upkeep fits the characteristics of a non-lapsing ability because, once established, the ability maintains its influence over the game state as long as the conditions remain met, without the need for additional activations each turn.

When you add a charge counter during your upkeep, that counter remains on the permanent or card until it is removed or until the card leaves the battlefield. This continuous presence reflects a non-lapsing characteristic, as the effect does not expire or require renewal.

In contrast, exiling a permanent and gaining control of an opponent's creature are examples of one-time effects. They are actions that occur at a specific moment, and once they are resolved, the effect does not continue. Similarly, granting +1/+1 until end of turn is a temporary enhancement that ends once the turn concludes, demonstrating a lapsing ability. Therefore, the ability to add a charge counter at upkeep distinctly classifies it as non-lapsing, as it initiates an ongoing game effect.