Which of the following is an example of low-velocity blood spatter?

Low-velocity blood spatter typically results from a force that is not overly intense, causing blood to travel only short distances and create larger droplets. The example of beating with a pipe or bat exemplifies this, as the impact from such a physical force can generate blood spatter patterns characterized by larger droplets that may drip or splatter within a limited range.

In contrast, blood blown out due to air pressure represents a different mechanism, often associated with high-velocity impacts, which produce fine mist-like spatter patterns. Similarly, blood drops caused by a falling drop relate to gravitational force and manifest typical falling drop patterns rather than spatter. High-speed impacts produce very fine, aerosolized droplets, which also fall outside the low-velocity category. Thus, the nature of the force utilized in beating with a pipe or bat distinctly aligns with low-velocity spatter characteristics.