what is the best answer does design bid build reduce projet

what is the best answer ?
does design bid build reduce projet duration ?

The advantage(s) of a Design/Bid/Build contractual arrangement is (are) Reduced project time Non-adversary relationships among participants o Known project cost before the construction phase O All of the above

Solution

In design build contractual arrangement, both design and construction takes place simultaneously and final project can be obtained faster and return on investment can be capitalised sooner.

Hence, design build contractual arrangement reduces project time.