Biology

The correct answer is: D.Nucleic Acids.

Here's why:

Nucleic Acids (such as DNA and RNA) are the only macromolecules that contain phosphorus (P) as a key element in their structure. Phosphorus is a part of the phosphate group that is attached to the sugar molecules in the backbone of both DNA and RNA. This phosphate group is crucial for the structural integrity of nucleic acids and plays a key role in storing and transferring genetic information.

Now, let's break down the other options:

A.Proteins: Proteins are made up of amino acids, which contain carbon, hydrogen, nitrogen, and oxygen. They do not contain phosphorus as part of their p...