The correct answer to this question is letter "b. emotional regulation." A 5 year-old might stop herself from hitting another child, because she has developed <span>emotional regulation. He or she knows what is the feeling of to being hurt or being loved.</span>
I think the correct answer from the choices listed above is the second option. National parks can be a double-edged sword because <span>the crowds of people that are attracted can disrupt the ecosystem. Hope this helps. Have a nice day.</span>