What type of segment is created for customers who viewed a laptop, added it to the cart, viewed its accessories, but did not proceed to checkout?

The correct choice is B, a sequential segment. This type of segment is specifically designed to track user behavior in a sequence, highlighting the actions customers take in a stepwise manner. In this scenario, the sequence includes viewing a laptop, adding it to a cart, and subsequently viewing accessories, with the distinct criterion that these customers did not complete the checkout process.

A sequential segment allows marketers to understand the user's journey and identify where potential drop-offs occur. By capturing this sequence of interactions, businesses can tailor engagement strategies to re-engage these customers effectively, such as by sending reminders regarding the items they viewed or special offers on the accessories.

The other types delineated do not align as closely with this behavior tracking. A static segment refers to a fixed group of users based on a set of criteria that does not change over time, while a dynamic segment is more fluid and updates automatically based on the ongoing behavior of users. A targeted segment is focused on a specific audience for a marketing campaign but does not encapsulate the sequential behavior being highlighted in this scenario. Thus, the appropriate categorization of the customer behavior described is indeed a sequential segment.