Answer:
A. Lock in customers, raise barriers.
Explanation:
The correct answer of this exercise is option "a" because, in this case, Jason's Burgers creates a strategy for a specific client (busy office workers) to keep buying in this diner and not switch to another one. By creating a strategy that improves brand experience and incentives more buys, you "raise barriers" and "lock in" costumers to keep buying in this diner.
The other options are not correct because they do not entry in any new market, they reduce time but not costs, they do not create a new product because the products are still the same and they do not establish alliances because the orders online are taken by the diner itself.