They lack genetic material. They lack a mechanism of motility. They lack internal membrane-bound organelles. They lack a need for proteins in their life functions.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which property supports the hypothesis that eukaryotic mitochondria were once prokaryotic organisms?
Possibilities:
- They lack genetic material.
- They lack a mechanism of motility.
- They lack internal membrane-bound organelles.
- They lack a need for proteins in their life functions.

They lack internal membrane-bound organelles.