Anew object, object z, was discovered outside our solar system. object z is made of frozen gases that surround a rocky core and it travels in a highly elliptical orbit around the sun. the characteristics of object z most closely resemble those other: a. asteroids
b. dwarf planets
c. comets
d. moons

I think the correct answer from the choices listed above is option C. The characteristics of object z most closely resemble those other comets. It is an icy small Solar System body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. 

1. protection 2. homeostasis 3. storage4.blood formation5.bone marrow 6.movement