Question

Which statement about the Identity Relation is correct?

Options

• It never contains self-pairs and is never reflexive.

• It contains every possible ordered pair and is always universal.

• It contains only reverse pairs and is always symmetric.

• It always contains all self-pairs and is always reflexive.

Answer 1

The Identity Relation contains \((a,a)\) for every \(a\in A\). Since all self-pairs are present, it is always reflexive.