If there is a problem to the availability and quality of water, the authorities should consult a hydrologist. This is because the problem has to do with water, and hydrologists keep track of exactly that problem, the quality and availability of water.
The nucleus directs all activities that happen within the cell and contains the cell genetic material (DNA).<span> The nucleus gives the signal to the cell to grow, divide and/or make proteins. </span>
B) Nucleus!
Prokaryotic cells do not have a nucleus, and the Nucleus in a Eukaryotic cell are large and very hard to miss (if that matters to you!)
The answer would be c this would show relations