Final answer:
The 'Don't ask, don't tell' attitude suggests professionals should only address behavioral issues if the client brings them up, reflecting a passive approach.
Step-by-step explanation:
When approaching behavioral problems, the attitude that suggests addressing the issue only if the client brings it up is best described as B) Don't ask, don't tell. This approach typically means that the therapist or counselor will not initiate conversations about sensitive or potentially problematic behaviors unless the client chooses to discuss them first. This can be seen as a passive strategy and may be appropriate in certain contexts where client autonomy is highly valued or where the therapeutic approach prioritizes client-driven topics.