As part of a laboratory experiment, a thin slice
of peeled raw potato weighing 10 grams is
placed in an oven at 80°C. After 5 hours, the
potato sample is removed from the oven and
weighed again. The purpose of this experiment
might be to
(1) test for the presence of starch in living
tissues
(2) isolate cells in various stages of cell division
(3) determine the water content of potato
tissue
(4) study the rate of photosynthesis in potatoes

the correct answer is c   with the systems

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.