Answer:
B. They form cell membranes
Explanation:
There's not really an explanation, that's just a fact. A phospholipid bilayer has two layers of, yep, phospholipids. They stay together well and kind of move around a little, allowing small particles to pass through. There are some proteins in them also that help them function as cell membranes.
Communal living would be a society where everyone lived in the same community and shared everything. So the answer is A.
$334.8 million was spent by Donald Trump during his presidential bid.
