Suppose a molecule that is too large to pass through a cell membrane on its own needs to exit a cell down its concentration gradient. What method of transport will be needed in order to accomplish this?

When a molecule moves down its concentration gradient is it participating in passive transport; moving up the concentration gradient requires energy making it

Explanation:

i think the answer would be d

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;