Select the correct answer. What is the SI unit of time?
OA.
second
OB.
minute
OC. hour
OD
day
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A. Second

Explanation:

The S.I unit of time is in Seconds.

The S. I unit is known as the metric system is the most commonly used system of reporting scientific measurements in the world today. Other units are the imperial units.

It is the international system of unit used in almost all countries. The seven basic SI units are:

        Quantities                                    Units

The SI unit of time which measures the duration of an activity or event is therefore given as seconds(s)

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.