Which of the Following Contains the Proper Word Among Same-

Which of the following contains the proper word among same- or similar-sounding words? Select all that apply.

A) After being made to wash all the floors, the boy had learned his lessen.
B) Having a friend in jail can lesson the pain of incarceration.
C) Wearing gloves will lessen the damage to hands when you wash dishes.
D) I want to take lessons in piano.