Which of the following might make it easier for a runner duck to voluntarily get onto a scale?

Providing a ramp on the floor leading up to the scale creates a gentle gradient that allows the runner duck to approach and get onto the scale more easily and comfortably. Ducks, including runner ducks, are often more motivated to navigate inclines when they don’t have to jump or make sudden movements, which can be intimidating. The ramp offers a pathway that feels safe and less daunting, encouraging the duck to voluntarily step onto the scale.

Using a ramp aligns with the principles of creating a low-stress environment for animals. This technique not only respects the animal's comfort but also fosters trust, as it allows them to explore their surroundings at their own pace. The design ensures that the duck can clearly see the scale and feel secure while approaching it, minimizing anxiety and potential reluctance to interact with unfamiliar objects.

In contrast, the other options do not facilitate a secure or inviting approach for the duck. For example, making the scale wet could create a slippery and unsafe surface, while adding a perch might not align with the behavior and preferences of a runner duck, which generally prefers to walk rather than perch. Positioning the scale on a table could also increase the height and introduce an element of fear or discomfort, making the scale less accessible. Thus, a ramp