Prior to an invasive examination of a hospitalized client, a consent form should be obtained. Which action best describes the responsibility of the practical nurse (PN)?

Explains the examination and asks the client to sign the consent form.

Obtains the medical record for the correct signed consent form prior to the examination.

Asks if the client understands the exam and why the consent form must be signed.

Witnesses the client's signature on the consent form after it is explained by the provider.