If a uniform cube of tofu is placed on a horizontal table and cut off in half along the horizontal direction, its gravity will be half of the original, so the pressure on the horizontal table will be half of the original;

Because it is cut horizontally, the contact area between it and the desktop has not changed. According to the pressure formula p=

f

s

If the pressure is halved and the area remains the same, then the pressure will be halved.

So only option c meets the question.

So choose C.