Two brothers inherit different sets of alleles from their parents. what effect will they have?

The answer should be C. Even though potatoes have a pretty high concentration of water, 1% is still salts/minerals/other things in a potato. That means that if the potato is surrounded by pure water, then the potato should absorb some water, as water molecules will move from the more concentrated area to the less concentrated area. However, 99% is relatively close to 100%, so not too much water would be absorbed. Hope this helps!