Final answer:
The lever will move downward if a man applies a downward force on one end, the extent of which depends on factors not provided in the question.
Step-by-step explanation:
The question relates to the movement of a lever when a weight (a man) is applied to one end, pivoting about point A. Assuming the lever does not bend and the question is concerned with physical principles like levers and forces, the answer is dependent on factors that are not provided in the question, such as the length of the lever, the weight of the man, the location of the fulcrum, and the presence of any other forces.
In the real world, if a man applies a downward force to one end of a lever, the lever would typically move downward unless there is an equal force acting on the other end. Assuming no other forces are in play, the lever would move downward, but the extent - whether slightly, moderately, or significantly - would depend on the aforementioned factors.