According to the idea of equal opportunity opportunities can be limited by a persons

Gender

Race

Ability

Religion

According to the idea of equal opportunity, opportunities can be limited by a person's ability.

Explanation:

The idea of equal opportunity applies to only those who are capable of the available opportunity. The person who is not eligible or fit for the opportunity, would in the first place not be offered the opportunity. The other criterion for the idea of equal opportunity to be applicable is the qualification of the person. If the person is not qualified enough, he cannot be deemed eligible to have the opportunity.