Question

semipermeable means...
only water can get through.
nothing can get through.
only some things can get through.
everything can get through.

Explanation:

A semipermeable membrane allows only certain substances (usually small molecules like water, some ions) to pass through while restricting others. It's not just water (so first option wrong), not nothing (second option wrong), and not everything (fourth option wrong).

Answer:

only some things can get through.