In any scientific paper you can find th eprocedure part which should in detail explain how the procedure of a particular experiment was performed. Using these instructions we should be able to replicate an experiment, if the results that were obtained in the previoues experiments were correct of course.
Answer: The broadest group for classification is "Domain".
Domain is a taxonomic group that lies above kingdom level and divides all life forms into three broad categories that is Archea, Bacteria, and Eukarya.
On the contrary, Taxon is a rang or a unit (like species, genus, class) that is designated in the biological classification of organisms.
Thus, b) Domain is the right answer.
Because lower salinity is the only thing he reproduced, in a large ecosystem such as the Atlantic Ocean there are a variety of factors that can influence the development of eggs.
Oxygen i think
hope this helps