The Declaration of Independence is important because it contains the goals of our nation, it has the complaints against the British King, it explains why colonists wanted to be free, and/or it helped unify colonists.
The answer for your question would be : A. Gross motor skills
Gross motor skill utilize the movement from one's arms, leg, and feet to create a larger actions such as walking, jumping , or running. The fact that that infant are capable to walk is a sign of the development of Gross motor skills
#2 I think if not than #3
One problem resulting from urban areas growing is that family-farms are being sold out, and that affects the communities around it. And second, it affects the natural enviorment with pollution, no matter how many laws there are. Take L.A. for example, at times it can be very smogging. You see it in the sky but not many people speak out against it. It proabably was once a little town too.