Question

how does the detail in bold develop the main idea? when dr. james naismith invented the game of basketball at springfield college in 1891, he incorporated aspects of existing games such as rugby, soccer, and lacrosse and established thirteen rules for play. none of these thirteen rules entailed keeping both feet on the ground; still, for the next several decades, basketball was a sedate game with few fast moves or high jumps. in fact, in the 1930s, when university of missouri player john cooper tried an innovative play—jumping while shooting—his coach pulled him out of the game. however, after watching cooper perform the move in practices, the coach eventually had a change of heart and allowed cooper to use the jump shot at games. meanwhile, similar situations were taking place at other colleges. as a result of the tradition - breaking moves of a few unorthodox players, the jump shot caught on and became an integral part of the game. it describes a shift in attitude toward the jump shot. it explains why the jump shot was only used during practices.

Explanation:

The bold - faced text shows that the coach initially pulled John Cooper out for using the jump - shot in a game but later allowed it after seeing it in practice. This represents a change in the coach's attitude towards the jump - shot. It doesn't explain why the jump - shot was only used in practices.

Answer:

It describes a shift in attitude toward the jump shot.