Final answer:
The agreement between SweetThings Inc. and Reverie Inc., where SweetThings owns a stake in Reverie without any reciprocal ownership, constitutes a strategic alliance and not a joint venture, merger, or acquisition.
Step-by-step explanation:
When SweetThings Inc. owns 30 percent of Reverie Inc., and Reverie Inc. does not own any part of SweetThings Inc., such an agreement is called a strategic alliance. This is not considered a joint venture because they have not formed a new entity, nor is it a merger or an acquisition, since the companies have not combined into a single firm or one has not been purchased by the other.
A strategic alliance can be described as a formal arrangement between two companies to pursue a set of agreed upon objectives while remaining independent organizations. The type of agreement described, where one company owns a percentage of another company without the second company owning any part of the first company, is called a strategic alliance.