Animals are distinguished from other groups of eukaryotic organisms in that they: (Select all that apply.)

a. produce collagen.
b. have embryos that include a gastrula stage.
c. are multicellular heterotrophs lacking cell walls.
d. are mobile.

option A, B, C at correct

Explanation:

All animals have collagen. Collagen is found exclusively in all animals. It is the main structures protein that is found in the connection tissues of animals.

Animals do possess embryos that undergoes gastrulation where the digestive cavity and germ layers are formed, these then develop into certain tissue systems, organs etc

Animals are heterotrophs in that they are unable to symthesize their own food but rather depend on plants which are autotrophs for their food and they also lack cell wall which differentiates them from plants. Not all animals are mobile for example, sponges.

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i'm thinking 600 feet deep in one of the finger lakes.