Can someone help the question is What is the main difference between arteries and veins? The choices are in the picture.

Answer - Arteries are blood vessels that are responsible for carrying oxygen-rich blood away from the heart to the rest of the body while veins are blood vessels responsible for carrying blood low in oxygen from the body back to the heart for reoxygenation.

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passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!