Answer:
If he had refused to participate in the shooting competition, he would not have won the gold and silver arrows and would not have defeated the sheriff, one of his greatest enemies.
Explanation:
The archery contest was created by the sheriff who wanted to capture Robin hood. The sheriff knew that Robin was a big fan of competitions and that he would not fail to try to win the valuable prize to help the poor. Furthermore, he knew that Robin was the best archer in the region, so he would arrest Robin in the contest.
Robin however, decides to go undercover and in fact wins the contest and defeats his enemy.
If he had refused to participate in the contest, he would not have won the gold and silver arrows.
