Option A: Express consent occurs when an individual takes a specific, observable action, such as signing a document or clicking an 'I agree' button online, to give explicit permission for their information to be processed. This type of consent is clear and unambiguous.

Option B: Implied consent is inferred from an individual's actions, such as when they provide information voluntarily without a specific action indicating consent.

Option C: Informed notice refers to providing individuals with information about how their data will be used, but it does not itself constitute consent.

Option D: Authorized notice is not a standard term in data protection and privacy contexts.

IAPP CIPT Study Guide

GDPR Article 4(11) Definitions on Consent