Final answer:
D. Advanced Wait Properties. The correct feature for ensuring that an auto-response email is sent after one day but only on business days is 'Advanced Wait Properties'.
Step-by-step explanation:
The feature a marketer should use to ensure an auto-response email is sent only on a business day, and not on the weekend, after waiting one day post form submission by a lead, is D. Advanced Wait Properties. This feature allows the marketer to specify particular days when the email should be sent, excluding weekends.
It adds intelligence to the email automation system, ensuring that communications are aligned with business hours, hence increasing the likelihood of timely engagement.
Using features such as Marketing Calendar or Program Schedule View might help in planning, but they don't control the automation timing as required in this scenario. Date Filters may help in segmenting leads based on date criteria but are not designed to manage the sending schedule of emails.
The marketer should use Date Filters to ensure that the auto-response email is not sent on a weekend. Date Filters allow the marketer to specify certain conditions or rules for when the email should be sent. In this case, the marketer can set a filter to exclude weekends, so that the email will only be sent on business days.