bruh can please get help on the "Body Systems Hierarchy Quick Check"

1. Which is most complex?
Responses
organ system
cells
tissues
organs

Organ system

What is the function of an organ system?

Responses
to work together to do a specific job.
to be a basic unit of organization with bodies.
to organize a group of similar cells
to control movement in internal organs

to work together to do a specific job.

Which option is a main type of muscle tissue?

Responses
skin
spongy bone
cardiac
blood vessels

cardiac

Which list is an organ system?

Responses
the liver, the bladder, and the heart
the heart, arteries, and veins
the heart, the stomach, and intestines
the liver, blood, and skin

the heart, the stomach, and intestines