Which level of organization completes a series of tasks?

The correct answer to this question is organ system. As the name suggests this system is made from a group of organs. These organs work together to carry out functions in the body. There are plenty of organs in the body and they all have different jobs. The respiratory system includes organs like the lunghs and larynx.

They are important in carrying out the function of breathing. Then, there is the reproductive system, which include organs like the vagina, penis, and uterus. Also known as the sex organs, these are necessary to help organisms engage in sexual activity to reproduce.