Answer: A) lipid bilayers
Explanation: The lipid bilayer is made up of fatty acids and amphiphilic phospholipids (hydrophilic phosphate head and a hydrophobic tail).
The lipid bilayer controls molecules, ions that goes in and out of the cell.
The location and types of volcanoes are related to plate tectonics as well, so in that sense volcanoes also help us to understand about the tectonic history of a region because if there are volcanoes someplace even if they're not currently active we know that that must have been some sort of a plate uwu