Final answer:
Adding a common delay to the time before the availability of a smaller-sooner outcome and a larger-later outcome will increase people's preference for the larger-later outcome.
Step-by-step explanation:
The correct answer is D) Will increase preference for the larger-later outcome. Adding a common delay to the time before the availability of a smaller-sooner outcome and a larger-later outcome will increase people's preference for the larger-later outcome. This is because the delay makes the larger-later outcome more attractive and valuable in comparison to the smaller-sooner outcome.