Why do you think some people still become ill even after taking strong precautions against an illness, such as receiving a vaccine?

Everyone's bodies are different, and some respond in different ways.  If you have a compromised immune system your body might not work the same as everyone elses.

Explanation:

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.

japan is the correct anwser because i already took the test and i passed it