A spontaneous mutation usually originates as an error in

A modification in genetic material like DNA due to errors and mutating agents causes mutation that can lead to diseases and disorders.

The spontaneous mutation originates due to error in:

DNA Replication

Mutation can be explained as:

Thus, errors in DNA replication can cause spontaneous mutation.

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Replication

A spontaneous mutation usually originates as an error in replication

Explanation:

During DNA replication, the enzyme DNA polymerase help to proofread the template strand, however it is not always 100% accurate. Thus, base pairs could become mismatched resulting in spontaneous mutation

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.