Final answer:
Histones are DNA-binding proteins that are important for DNA packaging in eukaryotes.b) Eukaryotes
Step-by-step explanation:
In DNA packaging, histones are DNA-binding proteins that play a crucial role. They are important for DNA packaging in eukaryotes. The DNA wraps tightly around histone proteins to form structures called nucleosomes. These nucleosomes further compact to form chromosomes. Histones are not involved in DNA packaging in prokaryotes, archaea, or viruses.