I think it’s “the newest” or “newest”
The article deals with The American Red Cross(Who) that is encouraging people to update on the cardiopulmonary resusitation(What). It tells us that"compression -only " CPR is an alternative when a responder is unwilling or unable to perform complete CPR( when).
Although it describes the procedure it does not really detail <em>how </em>to do it or <em>how</em> the The American Red Cross is planning on encouraging people to switch for this method.
How identity can be developed is how you see yourself and what you think of yourself.