Introduction:
In the story "Suraj ka Satwan Ghoda" by Dharamvir Bharati, Ranji is a wrestler who is known as a pahelwan. He agrees to teach Suraj, the narrator and protagonist of the story, some skills.

Explanation:
Diving:
Ranji agrees to teach Suraj how to dive. Diving is a technique used in swimming where a person jumps into the water from a height. It requires proper body coordination, balance, and technique to enter the water smoothly without any injuries. Ranji, being an experienced pahelwan, would be able to teach Suraj the correct technique and ensure his safety while diving.

Swimming Underwater:
In addition to diving, Ranji also agrees to teach Suraj how to swim underwater. Swimming underwater involves holding one's breath and propelling oneself through the water without coming up for air. This skill is useful for various activities such as exploring underwater environments, retrieving objects from the bottom of a pool or lake, or participating in underwater sports. Ranji's expertise in swimming and his knowledge of breath control would be valuable in teaching Suraj this skill.

Pahelwani:
Ranji is known as a pahelwan, which refers to a traditional form of wrestling in India. Pahelwani is not just about physical strength, but it also involves discipline, determination, and a deep understanding of body mechanics. Ranji agrees to teach Suraj not only diving and swimming underwater but also the principles and techniques of pahelwani. This training would help Suraj develop physical strength, agility, and mental resilience.

Conclusion:
Ranji agrees to teach Suraj diving, swimming underwater, and pahelwani. By learning these skills, Suraj would not only become proficient in swimming but also gain valuable life lessons in discipline, determination, and physical fitness. Ranji's guidance and expertise would ensure that Suraj learns these skills safely and effectively.