Final answer:
Nucleic acids are not a component of the plasma membrane, which instead mainly consists of phospholipids, proteins, and carbohydrates.
Step-by-step explanation:
Among the options provided, nucleic acids are NOT one of the four main components of all plasma membranes.
The principal components that make up a plasma membrane include phospholipids, proteins, and carbohydrates. Phospholipids form a bilayer that serves as the basic structure of the membrane. Proteins are either embedded within this bilayer or attached to its surface.
Carbohydrates are often found on the exterior surface of the plasma membrane, linked to proteins (forming glycoproteins) or to lipids (forming glycolipids). These components work together to maintain the integrity and functionality of the cell membrane, facilitating cell communication, transport, and structural support.