Sketch a space filling model of a water molecule, show polarity by label positive and negative charge regions of the molecule

The space filling model of the water is shown in the figure given below in the figure, where δ+/ δ- represent the partial charge.

The water molecule consist of 2 hydrogen and one oxygen atom. The oxygen atom is the central molecule and the other two hydrogen are bind to the oxygen atom. The sizeof the oxygen is much bigger than the hydrogen and is more electronegative than hydrogen. Due to the elctronegativity, the oxygen pulls the electron and gain slight negative charge and the hydrogen gain slight positive charge and result in polarity.

i believe the answer is a or 1

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.