C. Dinosaur footprint as it is the only body part that is stated in the choices.
Hope this helps :)
Two equally frequent gametes containing only parental allele combinations and no recombinant gametes
The basis of classification of
Linnaeus’ system is sexual reproduction. The
only "natural" taxon in Linnaeus' system is the species. Species defined
as a population with viable, fertile reproduction are separated from
interbreeding with other species.