B: agriculture developed independently in different parts of the world at different times.
Explanation:
Agriculture has a long history which started with collecting the wild grains. It was a long process when the domestication of plants has started. At different places, different societies have domesticated plants which ultimately led to agriculture. But not before the neolithic revolution that it had come to be known in its true modern sense.
my joints worked together and my leg muscles helped me from falling over. when you sit or stand you use the muscles in your legs to push up off the chair or to sit back down
