The argument is that schools should revert to traditional sports days. The reason for this is that adult life involves competition.
A – Wrong
The text does not assume that children are not naturally competitive. It just says that they should let children be part of competitions to prepare them for adult life.
B – Wrong
This statement makes an unnecessary correlation between children losing races and being unsuccessful in adulthood. The text does not assume this at all.
C – Wrong
Schools have introduced non competitive games to prevent damage to losers’ self-esteem. It does not necessarily assume that non-competitive games, however, will boost children’s self-esteem.
D – Correct
The text assumes that since sports days are competitive and adulthood is competitive, competitions in sports will help prepare children for adult life.