Final answer:
Audiences can be targeted using email marketing, social media advertising, display advertising, and direct mail, each chosen based on the demographic information of the intended audience.
Step-by-step explanation:
When using audiences for retargeting, the activities that can be included are email marketing, social media advertising, display advertising and direct mail.
These strategies allow businesses and political campaigns to reach specific demographic groups more effectively and efficiently. For instance, demographic information and media usage tendencies inform whether a campaign will employ traditional mass media like television and radio or more modern approaches like internet and social media campaigns.
Understanding the age, education, and technological proficiency of the intended audience is crucial in tailoring the message and medium to maximize engagement and impact.