What makes ribosomal rna useful as a molecular clock? a- a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b- its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c- a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d- it is only found in select organisms, making it easier to compare relationships between species that have it.

The correct answer would  be option C.

Ribosomal RNA (rRNA) is used as molecular clock due to many factors such as:

It has very slow mutation rate (around 1 million years) due to which it remains highly conserved in all the organisms. The degree of mutations present in rRNAs of two organisms can be directly linked to the time they were evolved in past.

In addition, it has essential biological function due to which it can be found in almost all the organisms.

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )