can you help please i will give you a branlist and it’s science

The first one is Liquid , second one is Solid and so the last one is gas.

so The anser is letter B

Explanation:

oxygen +1 most likely

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.