In 1990, the women's tennis association instituted a rule regarding age eligibility that limited the amount of tournament play for young players. looking at its success over a 10-year period, it was found

The answer to this question is A and C

Explanation:

After the age eligibility rule was instituted by the Women's Tennis Association, career lengths increased significantly. Before the rule was established, there were concerns that athletes who engage in professional sports at a very young age experience shortened careers and in most cases leave prematurely before even getting to their peak. However, the rule has helped in reducing premature retirement immensely.