Homeostasis is the regulation of internal body conditions such as temperature, sugar levels in blood, salt content etc. Without it many functions would become non-functional. If you take temperature for example without the control of our internal body temperature many metabolic reactions (enzyme-controlled reactions) would stop/ slow down. If the temp gets too high the enzymes denature and you wouldn't get an enzyme-substrate complexes forming. If the temp is too low the enzymes have a low kinetic energy and so don't collide with the substrate as much as at normal body temp. pH has similar affect but a change in pH will always denature enzymes.
Here is the answer based on the given situation above. If few Guatemalans appear to be acute malnourished and in fact, they mostly appear healthy, but in reality, they are not, this is because they are not getting enough food and proper nourishment. They have the food, but it is never enough to fulfill the required amount to achieve good health. Hope this helps.
The text book says "Most experts say it is reasonable to loose half a pound to 2 pounds per week."
So your answer would be A :)
A tips for dealing with cravings
Hope this helps.
