We can’t see the picture :(
Maybe post another question but with the picture
It will be better for the population
The correct option is A.
The serosa refers to the outermost layer of loose connective tissues which is often covered by mucus and which contains blood vessels. In the gastrol intestinal tract, the serosa refers to the outermost layer of the wall of the GI tract. One major function of serosa is to reduce friction from muscle movement.
THE ANSWER IS TRUE BECAUSE WATER AND SOIL PLAYS A GREAT PART IN THE EARTH'S CYCLE