Final answer:
The most sequential project delivery method that is not typically used for fast-tracking is Design Bid Build (DBB), which follows a strict order of design, bid, then build phases.
Step-by-step explanation:
The project delivery method that is the most sequential in nature and not typically used for "fast-tracking" is A) Design Bid Build (DBB). In DBB, the design phase is followed by the bidding phase and then the build phase, each happening in sequence without overlap. Fast-tracking is a process that allows design and construction to occur simultaneously, which is not a characteristic of the Design Bid Build approach. Other methods like Design Build (DB) and Construction Management (CM) allow for more flexibility and can facilitate fast-tracking by overlapping design and construction phases.