Final answer:
The option that is NOT an advantage of programmatic buying is 'Programmatic allows for buyers to negotiate value added media placements', because programmatic buying primarily uses algorithms and real-time bidding, which leaves little room for negotiation.
Step-by-step explanation:
The question is asking to identify which option is NOT an advantage of programmatic buying. Programmatic buying is an automated method of buying digital advertising, where software is used to purchase digital advertising space. The options provided relate to the benefits of programmatic buying, such as the speed of optimization, flexibility in budgeting due to real-time bidding (RTB), and competitive pricing through auctions.
However, option d, 'Programmatic allows for buyers to negotiate value added media placements' is NOT an advantage of programmatic buying. This is because programmatic buying is typically based on algorithms and real-time bidding, which does not involve negotiation for added value placements as in traditional media buys. While there could be some opportunities for negotiation in programmatic direct deals, it is not the norm and thus not a standard benefit.