It’s definitely b
hope this helps
<span>The answer is nuclear imaging. A subject is asked to take in a radionuclide (radioactive
isotopes) and as the radioactive material passes though the body, it continually emits radiation that is detectable by an instrument such as a gamma camera. Examples of nuclear imaging
techniques are SPECT and PET.</span>
I can't really give you a percentage sorry. My answer is Possible, yes but probable, no.
Neither, humans don't have an estrous cycle, instead the females have a menstrual cycle.
