Custom Bid Adjustment allows adjustments up to what percentage of the original bid?

• A. Up to 50%
• B. Up to 75%
• C. Up to 90%
• D. Up to 99%

Answer: (D)

Custom Bid Adjustment sets how much you can modify the base bid for an ad relative to that starting bid. The adjustment is capped at 99%, so you can push the bid up by as much as 99% or pull it down by as much as 99% of the original amount. In practice, with a baseline bid of $1.00, the highest you could bid is $1.99 and the lowest would be $0.01. This cap lets you respond to performance signals by almost doubling bids on strong opportunities or dialing them way back on weaker ones, without ever exceeding the 99% limit. The other options are simply smaller caps and do not represent the maximum you can adjust.