To perform chest compressions on an adult one hand is placed on top of the other with the heel of the lower hand pressing between the nipples. on the upper third of the sternum. two finger widths below the sternum. on the xiphoid process.

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.