Answer: Option A
Explanation:
The movement of glucose across membrane is controlled by carrier proteins that helps in the movement of the glucose molecules.
The movement of ion from a low concentration to a higher concentration results in a decrease in entropy, which requires an input of free energy so ions need channel for their movement and it cannot be transported by membrane proteins as like that of glucose.
hence, glucose is transported across membrane by carrier protein and sodium does not move by this method.
