Step 1: Histone Function in DNA Packaging. Histones are fundamental proteins in eukaryotic cells responsible for compacting DNA. Their inherent positive charge enables electrostatic attraction to the DNA's negatively charged phosphate backbone.Step 2: Amino Acid Composition of Histones. Histones exhibit a high abundance of basic amino acids, specifically lysine and arginine. These amino acids contribute the positive charge essential for strong binding to DNA.Step 3: Evaluation of Alternative Options. Option (A): Invalid. Glycine and proline are not basic amino acids and thus do not contribute to DNA-histone binding. Option (C): Invalid. Alanine and serine are neutral amino acids and play no role in DNA interaction. Option (D): Invalid. Aspartic acid and glutamic acid are acidic amino acids, possessing a negative charge that repels DNA.\[\therefore \text{The correct answer is: Lysine and arginine.}\]