Here is my question...
Offering free samples of a new candy bar is an example of what type of promotional objective?

Stimulate Demand – The right promotion can drive customers to make a purchase. In the case of products that a customer has not previously purchased or has not purchased in a long time, the promotional efforts may be directed at getting the customer to try the product. This is often seen on the Internet where software companies allow for free demonstrations or even free downloadable trials of their products. For products with an established customer-base, promotion can encourage customers to increase their purchasing by providing a reason to purchase products sooner or purchase in greater quantities than they normally do. For example, a pre-holiday newspaper advertisement may remind customers to stock up for the holiday by purchasing more than they typically purchase during non-holiday periods.

Simple Product Awareness. Demand Stimulus, as stated by another respondent, would be more a factor of an accompanying coupon or other incentive, such as promotion of health or improved appearance benefits. (Which are unlikely to apply to the candy bar scenario).