Final answer:
Both an earthworm and a rabbit are multicellular, use respiration to obtain energy, have a nervous system, and reproduce sexually.
Step-by-step explanation:
Both an earthworm and a rabbit are examples of multicellular organisms which is a common characteristic they share, as indicated in option A. In addition, both of them obtain energy through respiration, which means they both use oxygen to help convert food into energy, which relates to option B. Option C is also true as both organisms have a nervous system that helps them respond to their environment. Lastly, both exhibit sexual reproduction, meaning they reproduce by combining the genetic material from two parents, as indicated in option D. Thus, all of the options, A, B, C, and D, are characteristics that are common to both an earthworm and a rabbit.