What is the best example of the inciting incident in oedipus rex?

It was when Creon announces what the oracle has told him.  

Oedipus, the lord of Thebes, has sent Creon who is his brother in law, to the Apollo to request that the oracle on advice on how end the plague. Creon returns, bearing news: once the one who murdered the past ruler, Laius, is discovered, Thebes will be restored of the torment and the events after that begin.  

The inciting incident is a scene, plot point or occasion that guides the audience into the story. This specific minute is the point at which an occasion pushes the hero into the principle activity of the story.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.