Respuesta :

The correct order of the dynamic markings from softest to loudest is: 
B. p, mp, mf, f

These are its letter meanings.
p - piano 
→ This means "soft"
mp - mezzo-piano 
→ 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"
pp - 
pianissimo. This means "very soft".
più p - 
più piano. This means "softer".
p
mp
mf
f
più f - 
 più forte. This means "louder".
ff - 
fortissimo. This means "very loud"
fff - 
fortississimo. This means "very very loud"