The correct order of the dynamic markings from softest to loudest is:
<span>B. p, mp, mf, f
These are its letter meanings.
p - piano </span>→ This means "soft"<span>
mp - mezzo-piano </span>→ This means "half soft"
mf - mezzo-forte → This means "half loud"
f - forte → This means "loud"
The overall ranking of dynamic markings are:
ppp - pianississimo. This means "very very soft"<span>
pp - </span>pianissimo. This<span> means "very soft".</span><span>
<span>più p - </span></span>più piano. This means "softer".<span>
p
mp
mf
f
<span>più f - </span></span> più forte. This means "louder".<span>
ff - </span>fortissimo. This means "very loud"<span>
fff - </span>fortississimo. This means<span> "very very loud"</span>