Respuesta :
Answer:
A.Bacteria are single-celled is the correct answer.
Explanation:
bacteria are a prokaryotic organism and humans are a eukaryotic organism.
One way in which bacteria differ from humans is that bacteria are single-celled while humans are not single-celled because they are made up of more than one cell and they are multicellular whereas bacteria are unicellular.
hence the correct answer is ( A) Bacteria are single-celled.