Which of the following statements about archaea and bacteria is true?

A. Neither is single-celled.

B. They both have nuclear membranes.

C. Neither reproduces by binary fission.

D. They both lack a nuclear membrane.

The correct answer is option D, They both lack nuclear membrane

Both Archaea and Bacteria belongs to the prokaryotic and thus have no cell nucleus or any other membrane-bound organelles in their cells. These two are single celled and reproduce through binary fission.