In the stable form of protein, what is generally oriented to the interior of the protein molecule? a. Random portions b. Hydrophobic portions
c. Polar portions
d. Hydrophilic portions

The correct answer is b

Explanation:

Proteins are made up of amino acids. Proteins (there exterior) are generally hydrophilic (i.e can dissolve in water) as they must be able to interact with/dissolve in the liquid component of the cell hence, the outer part of proteins are made of/oriented of hydrophilic amino acids while the hydrophobic (water fearing/inability to dissolve in water) amino acids/portions are generally oriented inwards/into the interior of the protein structure.