Home » HubSpot Marketing Software Certification » Fill in the blank: Strive to choose a core topic with a monthly search volume that’s at least __________. Fill in the blank: Strive to choose a core topic with a monthly search volume that’s at least __________. by Editorial Staff Advertisement 15shares Facebook LinkedIn Pinterest Twitter Email 20 300 800 1,500 Join our listSubscribe to our mailing list and get interesting stuff and updates to your email inbox. Thank you for subscribing.Something went wrong.We respect your privacy and take protecting it seriously