Help, please will give brainiest

Macroinvertebrates are organisms that are large (macro) enough to be seen with the naked eye and lack a backbone (invertebrate). They inhabit all types of running waters, from fastflowing mountain streams to slowmoving muddy rivers.

I think it's C. it's sexual reproduction because the sperm and egg is comming from two different salamanders, not the same one. Since the egg and sperm are from different salamanders then there will be genetic variation in the offspring because the DNA from two different salamanders are present in the offspring.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.