Question

what constitutional change in russia illustrates executive dominance?
extension of presidential term limits
elimination of the presidency
strengthening of the judiciary
abolition of the legislature

Explanation:

Executive dominance refers to the concentration of power in the executive branch. Extending presidential term limits gives more power to the president (the executive). Abolition of the legislature would remove a key check on the executive, but it's not about enhancing executive power through a constitutional change in the same direct way as term - limit extension. Strengthening the judiciary is about the judicial branch, and elimination of the presidency would be the opposite of executive dominance.

Answer:

Extension of presidential term limits