Answer:
I believe this is facilitated diffusion which is a type of passive transport, meaning no energy is required. If it is, the molecules should be moving to an area of high concentration to an area of lower concentration.
It could be a type of active transport where energy is required. But it doesn't look like it is.
If in doubt, you should click the start cell transport to watch the molecules move (if that feature works). If there are many molecules outside the cell moving inside the cell where there are few molecules, the answer is option 1.
If there are few molecules inside the cell moving outside the cell where there are many molecules, the answer is option 2.