Step 1: Recall the definition of creep.
Creep is the slow, time-dependent deformation of a material under a constant load.
Step 2: Identify the type of deformation.
Since creep involves permanent deformation with time, it is associated with
\[
\boxed{\text{Plastic deformation}.}
\]
Therefore,
\[
\boxed{(B)}
\]
is the correct answer.