Biology

The correct answer is C.phospholipid.

Phospholipids are the key components of biological membranes, such as the plasma membrane. They have a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tails. The hydrophilic heads face outward toward the aqueous environment, while the hydrophobic tails face inward, away from water, forming a bilayer structure that is fundamental to the membrane's function.

Here’s a brief overview of the other options:

A.Proteins are embedded in the membrane but do not typically have a hydrophobic tail an...