I think its A im not sure
Answer:
"I will float a metered-dose inhaler in water to determine how much medication is left."
Explanation:
The arrival of autumn always brings with it a wave of flu, colds and respiratory complications caused by the decrease in temperature and humidity levels that are characteristic of this time of year. One of the ways most indicated by doctors as treatment and prevention for the aforementioned ills is the use of the famous inhaler device which is a machine that converts medications, which are initially in liquid form, into gaseous form to be inhaled by the lungs.
Regular cleaning and maintenance are essential for longer life and proper functioning of an inhaler. Some components of this machine should be replaced to prevent proliferation of microorganisms and to prevent malfunctions. To know the right time to replace, it is not necessary to float an inhaler in the water to determine how much medicine is left, just see if the inhaler components are dark or very dirty.
Perceiving pain and assisting in regulating muscle reflexes, breathing, and arousal are all functions of the reticular formation.
Gases can be produced by normal flora (bacteria that normally lives in the intestines) and harmful bacteria as well.
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