4x The instructions lor making proteins come originally from A RNA B rbosomes. C DNA D amino acids.

## Step 1<br />The question is asking about the origin of the instructions for making proteins. Proteins are essential components of all living cells and are involved in various biological processes. The instructions for making proteins are stored in the form of genetic material.<br /><br />## Step 2<br />The genetic material in cells is primarily composed of DNA (deoxyribonucleic acid). DNA contains the genetic code, which is a set of instructions for building and maintaining an organism. This code is transcribed into RNA (ribonucleic acid), which then translates this code into proteins.<br /><br />## Step 3<br />Ribosomes are the cellular structures where protein synthesis occurs, but they do not contain the instructions for making proteins. Amino acids are the building blocks of proteins, but they do not carry the instructions for their assembly.<br /><br />## Step 4<br />Therefore, the correct answer is C, DNA, as it is the molecule that carries the genetic instructions for the synthesis of proteins.