The answer should be A capillaries
in a hypertonic solution, water leaves a cell by osmosis, causing the cell to shrink. In the hypotonic solution the concentration of dissolved substances is lower in the solution outside the cell than the concentration inside the cell. Therefore, there is more water outside the cell than inside.
The answer is C. survive and reproduce
The corresponding evidence that supports the endosymbiotic theory would be options 1, 5, 6 and 2. I believe.