Answer:
The correct answer is option B) "The protein structures in the flagella are different".
Explanation:
Although both archaea and bacteria have flagella, the composition and likely the assembly of the flagella is very different from the two clades. In this sense, one observation that is accurate with the scientific conclusion that the flagella from archaea and bacteria evolved independently is that the protein structures in the flagella are different between them. Furthermore, no homologous of bacterial genes responsible for flagella synthesis had been found in archaea.
