Final answer:
The nurse would explain to the client that being 4 cm dilated means that the opening of the cervix is 4 cm wide. The nurse would also explain that being 60% effaced means that the cervical canal is 60% shorter than normal.
Step-by-step explanation:
The nurse would explain to the client that being 4 cm dilated means that the opening of the cervix is 4 cm wide. The nurse would also explain that being 60% effaced means that the cervical canal is 60% shorter than normal. These changes indicate that the client's labor is progressing and the cervix is preparing for the birth of the baby.