(A) It can be expensive to implement and maintain.
(B) Categories change so frequently that they have an unpredictable effect on reach.
(C) Doing so can significantly reduce the inventory your ads can appear with.
(D) This can expand your reach to sites you do not intend.
An important consideration when excluding keywords of categories that you deem unsafe for your brand is that excluding keywords can significantly reduce the inventory your ads can appear with.
This question is a part of the Bid Manager Optimization Assessment. You can get answers to all the questions asked in this exam in our Bid Manager Optimization Assessment Answers page.