In a cabinet system of government, executive power is exercised by the
head of government
president
monarch
dominant party
Correct answer is A
In a cabinet system of government, executive power is exercised by them head of government.
One of the major characteristics of Cabinet system of government is that the Prime Minister is the head of government while the President, Queen or King is the head of state eg. Britain.
The Prime Minister who is the Chief executive or head of government exercises the real executive powers. Another example is Nigeria during the First Republic.