The answer is C. At first I thought it was D but it actually belongs to clubmosses
no hydrophobic and hydrophilic refer to phospholipids in the cells membrane. A nonpolar molecule is a molecule which has no separation of charge, so no positive or negative poles are formed. In other words, the electrical charges of nonpolar molecules are evenly distributed across the molecule.
C; to stop pathogens with light harming the host cell