Which of the following regions is distal to the popliteal region?

The crural region, which refers to the area of the leg between the knee and the ankle, is indeed distal to the popliteal region. The popliteal region is located at the back of the knee, which means anything further away from the center of the body and towards the feet is considered distal. Therefore, the crural region fits this definition as it follows directly after the popliteal region along the leg.

In contrast, the tarsal region is located at the ankle, making it also distal; however, it specifically describes a region that is closer to the foot than the crural region is. The perineal region refers to the area around the anus and is located more centrally, while the pelvic region is located further up the body, making both of these options proximal rather than distal to the popliteal area. Hence, the crural region is the most appropriate choice for being distal to the popliteal region.