Why did the water molecules not enter the membrane

The water molecules not enter the membrane because membrane made up of many cells and also have many layers inside. Cytoplasm also help to move outside the water molecules. that why the water molecules not enter in the cells

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the index of refraction of the second medium is higher. i just took the test trust me !