Which organism is responsible for cervical cancer ?

human papillomavirus (HPV)

Explanation:

While there are many factors that put women at risk for cervical cancer, almost all cervical cancers are caused by the human papillomavirus (HPV), the same virus responsible for genital warts. There are over 100 different types of HPV. However, only certain types are associated with cervical cancer.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.