Correct answer choice is:
D. Frequency.
Explanation:
AC frequency is the number of periods per moment in an alternating current (ac) sine wave. Said different mode, the frequency is the scale at which the current varies course per instant. It is estimated in hertz (Hz), a global unit of measure wherever 1 hertz is equivalent to 1 cycle per instant.
Humans: legs, walk
bird: wings, fly
insect: legs or wings, fly or walk
fish: fins, swim
A Band-Aid can be a safety resource if you work in a doctors office.
Fine motor skills! Is the answer to this
