This is because judo including the given group are the sports which involve  body contact with handye coordination

Wrestling, Karate, and Boxing are all combat sports that involve physical contact and techniques for defeating opponents. The question asks us to identify another member of this group or class.

To answer this question, we need to consider the characteristics that define wrestling, karate, and boxing. These sports all involve combat and techniques for defeating opponents. They require physical strength, agility, and skill.

Let's analyze each of the given alternatives to determine if they share these characteristics:

a) Pole-vault: Pole-vault is a track and field event where athletes use a long, flexible pole to propel themselves over a bar. It does not involve combat or techniques for defeating opponents. Therefore, pole-vault is not another member of the group or class.

b) Swimming: Swimming is a water-based sport that focuses on the ability to move through water using various strokes. It does not involve combat or techniques for defeating opponents. Therefore, swimming is not another member of the group or class.

c) Judo: Judo is a martial art that originated in Japan. Like wrestling, karate, and boxing, it involves combat and techniques for defeating opponents. Judo practitioners use throws, holds, and grappling techniques to immobilize or subdue their opponents. Therefore, judo is another member of the group or class.

d) Polo: Polo is a team sport played on horseback, where players use mallets to hit a ball into the opposing team's goal. While it is a physically demanding sport, it does not involve combat or techniques for defeating opponents in the same way as wrestling, karate, and boxing. Therefore, polo is not another member of the group or class.

In conclusion, the correct answer is option 'C' - Judo. Judo shares the characteristics of combat and techniques for defeating opponents with wrestling, karate, and boxing, making it another member of the group or class.