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.
C, doubling the mass, as the bigger the object, the more energy is stored. Would appreciate brainliest!
Answer:
the example Is that if we see a plant it is made up of cells
