Histones are: Bblbepute OLNH OTBeT: a phospholipids b. nuclear RNA c mitechondrial proteins d. nuclear proteins

## Step 1<br />The question is asking us to identify what histones are. Histones are a type of protein that are found in the nucleus of eukaryotic cells. They play a crucial role in the organization of DNA within the nucleus.<br /><br />## Step 2<br />Let's evaluate each of the given options:<br /><br />a. Phospholipids: These are a major component of cell membranes, not histones.<br /><br />b. Nuclear RNA: This is a type of RNA found in the nucleus, not histones.<br /><br />c. Mitochondrial proteins: These are proteins found in mitochondria, not histones.<br /><br />d. Nuclear proteins: This is the correct answer. Histones are a type of nuclear protein.