The correct option is option 3, DNA and proteins. Chromosomes are structures found within the nucleus of cells that carry genetic information. They are made up of DNA molecules tightly coiled around proteins called histones. DNA, or deoxyribonucleic acid, is a molecule that contains the instructions for building and maintaining an organism. It is composed of nucleotides, which are made up of a sugar molecule, a phosphate group, and a nitrogenous base. Proteins, on the other hand, are made up of amino acids and are responsible for various functions within the cell. Therefore, chromosomes consist of a combination of DNA and proteins, which work together to package, protect, and organize genetic information. It is important to note that lipids, RNA, amino acids, and sugars are not the primary components of chromosomes.