What will most likely happen if a person does not consume the minium daily requirement of carbohydrates?

The body will break down glycogen from the liver.

To attain the minimum daily requirement of carbohydrates, the body is stimulated to break down glycogen to produce glucose. This is dome by producing glucagon a hormone which breaks down glycogen stored in the liver.In humans, glycogen is made and stored in liver and muscle cells. Muscle cell glycogen is broken down into glucose, and liver glycogen is broken down into glucose as a circulating energy source glucose for use by the body.

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom