Which of the following is considered a passive strategy in walkthrough design?

Guidance and validation smart tips are considered a passive strategy in walkthrough design because they provide users with context-sensitive help that appears as needed, without requiring them to engage actively. This approach allows users to absorb information and instructions without interruption, facilitating a smooth learning process. Users encounter these tips as they navigate through the product, and they don't have to take any proactive steps to seek help; instead, assistance is readily available when they need it the most.

In contrast, other strategies like blockers, while effective in guiding user behavior, may require users to acknowledge or dismiss an obstacle, making them more actively engaged in the experience. ProMotion and product adoption typically involve proactive engagement to encourage users towards certain actions or behaviors. Support and guidance may imply a need for users to initiate interaction to receive assistance, which is more active in nature compared to the passive presentation of guidance and validation smart tips.