The answer would be C, as many streams/rivers carry plant seeds, dispersing them. If there was a drought, these seeds wouldn't be able to float on the stream and disperse.
"chloroplast and animals" are not a match, since chloroplast only exists in plants and smalls cells for the purpose of utilizing photosynthesis. Animals do not require this process.
What I learned during this activity is how to properly set up a slide for viewing. I learned how to focus a microscope to make the image from the ocular more clear. How to view the different parts of a cell using dye to brighten up the key parts of the cell such as the cells Membrane, Cytoplasm, Nucleus, Ribosomes, Lysosomes, Mitochondria.
The second choice I think would be right because the picture is of a vaccine
