Answer:
A). Areas
Step-by-step explanation:
The word 'spheres' literally stands for 'domain, field, or area of expertise, activity, interest, influence, etc.' George Washington in his farewell address talks about the 'constitutional spheres' and here the sphere means 'areas of power.' He uses the term to warn the American citizens of 'one department presuming the entire authority or power of other departments' which is 'confining' and displays the necessity and significance of separation of powers. Thus, option A is the correct answer.