Final answer:
The most effective way for Mariah to optimize her social media campaign to drive followers to sign up for their monthly email newsletter is to include direct links to the newsletter sign-up form in her posts.
Step-by-step explanation:
The most effective way for Mariah to optimize her social media campaign to drive followers to sign up for their monthly email newsletter would be to include direct links to the newsletter sign-up form in her posts. By including direct links, Mariah makes it easy for her followers to access the sign-up form and increases the likelihood of them signing up. This strategy eliminates any additional steps or barriers that might deter people from signing up.
Furthermore, by including direct links, Mariah can track the effectiveness of her social media campaign and monitor the conversion rate from her posts to newsletter sign-ups. This data will allow her to evaluate the success of her campaign and make any necessary adjustments to improve its performance.
In conclusion, including direct links to the newsletter sign-up form in Mariah's social media posts is the most effective way for her to optimize her campaign and drive followers to sign up for the monthly email newsletter.