In the diagram shown, hormone molecules enter a cell without any energy input by the cell. Which statement...

In the diagram shown, hormone molecules enter a cell without any energy input by the cell. Which statement is MOST LIKELY true?
1. The hormone molecules are entering the cell by the process of osmosis.
2. There is a higher concentration of hormone molecules outside the cell than inside the cell.
3. The cell is using ATP to help move the hormone molecules across the cell membrane.
4. The hormone molecules are moving against a concentration gradient.