Available choices:
[I] eukaryotes.
[II] carbohydrates.
[III] microcytes.
[IV] prokaryotes.
Given those answer options, answer the question: Answer the following question given this paragraph: The first organisms were made of only one cell ( Figure below ). The earliest cells were prokaryotes . Prokaryotic cells are surrounded by a cell membrane, but they do not have a nucleus. The cells got their nutrients directly from the water. The cells needed to use these nutrients to live and grow. Q: The earliest cells were called what? A:
A:
[IV]